deíivered the opinion of .the Court.

The petitioner séeks relief under 28 U. S. C. § 2255 from his conviction and sentence for violation of the Federal Kidnapping Act, 18 U. S. C. § 1201. Briefly, the kidnapping charge grew out of the following facts: Petitioner,^ young man of twenty-six, and two seventeen-year-old boys, while in custody under state charges,, escaped from a Florida jail on November 12,-1949. They were almost immediately pursued by men and bloodhounds -through swampy eyerglade terrain. On November 14, 1949, they allegedly pre-empted an automobile and seized its owner forcing him to accompany them into the State of Alabama where they released the victim without harming, him and subsequently abandoned the car. On November 18, 1949, the defendants were arrested by federal authorities in a hiding place under the floor of a building. Petitioner" claimed that he was weak from, lack of food and sleep and that his back had been injured in the course of the escape. The defend- . ants were taken promptly before the United States Commissioner where they, were charged with transporting a ■kidnapping victim across state boundaries.

On the following day, petitioner was interviewed at length by a government agent concerning both the kidnapping offense-and-his prior record. "There was a conflict in the evidence concerning what transpired at this interview. The petitioner-testified that he was promised leniengy if he would ;plead guilty-and that he was assured *3that the juveniles would be given no more than four years’ imprisonment if they pleaded guilty. The Government offered evidence to the effect that no promises were made. In any event, pn Monday morning, November 21, 1949, petitioner and his codefendants, were brought by the government agent to the office of the United States Attorney where a discussion ensued concerning waivers of indictments, counsel, and venue, and pleas of guilty to an information which the United States Attorney proposed to file.

While that conference was proceeding, the government agent who had previously interviewed petitioner had a private out-of-court audience and conference with the district judge in his chambers at which, in the absence of the defendants, he discussed the contemplated proceedings with the judge and informed him about the alleged kidnapping offense and other alleged crimes of petitioner. Soon thereafter, and, in the words of the Court of Appeals, “[a]fter the judge’s mind had become thoroughly conditioned by this interview with, and the disclosures made to him by, [the government agent] regarding the defendants,” there followed in open court “a stilted and formal colloquy consisting of brief and didactic statements by the judge” that the defendants could have a lawyer if they wished and could have their cases submitted to a grand jury. 238 F. 2d 925, 927, n. 5. The defendants, including petitioner, stated that they did not wish to have an attorney and were willing to waive indictment and be prosecuted under an information to be filed by the prosecutor. The information was immediately filed and the defendants waived counsel and venue.1 They then imme*4diately pleaded guilty to the information and stated that they wanted to be sentenced promptly before their parents knew of their predicaments. The judge then sentenced petitioner to thirty years in the penitentiary and the two seventeen-year-old accomplices to fifteen years each. No appeals were taken.2

Because of these precipitous and telescoped proceedings, the case has had a long and troublesome history in the Court of Appeals fob the Fifth Circuit. It has; been three times before that court. Soon after the sentence was imposed, petitioner filed his initial ápplication under § 2255 to vacate the judgment. The application was denied without a hearing'-and no appeal was taken. In March 1954 petitioner filed a second, similar, application which was likewise denied without a hearing, but on appeal the Court of Appeals determined that petitioner’s allegations required a hearing. Smith v. United States, 223 F. 2d 750. After the hearing was held, the District Court again dismissed the application. 137 F. Supp. 222. Again the Court of Appeals reversed, this time finding that petitioner had been deprived of due process by the summary manner in which the Government had pro*5ceeded against him.3 Smith v. United States, 238 F. 2d 925, 930. First the court remanded the cause “with directions to grant the motion, to set aside the conviction and sentence, and to proceed further and not inconsistently” with the opinion. 238 F. 2d, at 931. On rehearing, however, the court modifiéd its directions as follows:

“The judgment is reversed and the cause is remanded with directions to set aside the conviction and sentence and to proceed further and not inconsistently herewith, including, if the district judge is of the opinion that the ends of justice require it, permitting the defendant to withdraw his waiver of counsel and his plea of guilty and to stand trial.” 240 F. 2d 347.

On the remanded proceedings, the District Court resentenced petitioner, but refused him permission to withdraw his waivers And guilty plea. The Court of Appeals *6affirmed this decision, Smith v. United States, 250 F. 2d 842, over the dissent of Judge Rives who believed that the court’s action in setting aside the conviction on justified due process grounds necessarily required the vacation of the plea of guilty. 250 F. 2d 842, 843-844. He also dissented on the ground that kidnapping under 18 U. S. C. § 1201 is a capital offense, which, pursuant to the Federal Rules of Criminal Procedure; Rule 7 (a), requires prosecution by indictment regardless of a defendant’s waiver, and that prosecution by information in the instant proceeding had not conferred on the convicting court 'jurisdiction to try petitioner’s cáse. We granted certiorari because of the serious due process and statutory questions raised. 357 U. S. 904. But in view of our belief that the indictment point is dispositive of the case in petitioner’s favor, we find it unnecessary to reach the due process questions presented.

The precise question at issue, therefore, is whether petitioner’s alleged violation of the Kidnapping Act had to be prosecuted by indictment.' A number off statutory and constitutional provisions and the information charging petitioner are, relevant to this inquiry. The Fifth Amendment provides in-part that “[n]o person shall be held to answer for a capital, or otherwise infamous crime, unless on a presentment or indictment of a Grand- Jury,” except in cases not pertinent here. But the command of the Amendment may.be waived under,certain circumstances,4 and the Federal Rules of Criminal Procedure, Rule 7 (a), provide as follows:

“An offense which may be punished by death shall be prosecuted by indictment. An offense which may be punished by imprisonment for a term exceeding one year or at hard labor shall be prosecuted by *7indictment or, if indictmeñt is waived, it may be prosecuted by information. Any other offense may be prosecuted by indictment or by information. ' An information may be filed without leave of court.” (Emphasis added.)

These enactments become particularly pertinent in view of the language of 18 U. S. C. § 1201, the statute under which petitioner was convicted, which provides in part that:

“(a) Whoever knowingly transports in inters state . . . commerce, any person who has been unlawfully . . . kidnapped . . . shall be punished (1) by death if the kidnapped person has not been liberated unharmed, and if the verdict of the jury shall so recommend, dr (2) by imprisonment for any term of years or for life, if the death; penalty is not imposed.”

The charging part of the information against petitioner stated that he “did knowingly transport in interstate commerce ... a person, to wit, Alan W. Spearman, Jr., who had been unlawfully seized, kidnapped, abducted, and carried away and held for the safe conduct-of the three defendants . . . .” The charge did not state whether Spearman was released harmed, or unharmed.

It has been held by tw;o Courts of Appeals that indictments similar in terms- to the charge here were sufficient to support capital punishments despite the absence of allegations that* the kidnapping victims were released harmed. United States v. Parrino, 180 F. 2d 613; Robinson v. United States, 144 F. 2d 392. Cf. United States v. Parker, 103 F. 2d 857. Petitioner contends that these holdings dispose of his case because they make clear that the statute creates a single offense of kidnapping which may be punished by death if the prosecution, at trial, shows that the victim was released in a harmed condi*8tion. The Government claims, however, that whether a specific kidnapping constitutes a capital offense requires examination of the evidence to determine whether the victim was released harmed or unharmed; in other words, -that the statute creates two offenses: kidnapping without harm, which is punishable by a term of years, and kidnapping with harm, which is punishable by death. Further, the Government contends that the mere filing of an information by the United States Attorney eliminated the capital element of. the- crime. «■

The Courts of Appeals which have been concerned with the statute have uniformly construed it to create the single offense of transporting a kidnapping victim across state lines., We agree with this construction. Under the statute, that offense is punishable by death if certain proof is introduced at trial. When'an accused is charged, as here, with transporting a kidnapping victim across state lines, he is charged and will be tried for an offense which may be punished by death. Although the imposition of that penalty will depend on whéther sufficient proof of harm is introduced during the trial, that circumstance does not alter the fact that the offense itself is one which may be punished by death and thus must be prosecuted by indictment. In other words, when the offense as charged is sufficiently broad to justify a capital verdict, the trial must proceed on that basis, even though the evidence later establishes that such a verdict cannot be sustained because the victim was released unharmed. It is neither procedurally correct nor practical to await the ■ conclusion of the evidence to determine whether the accused is being prosecuted for a capital offense. For the trial judge must make informed decisions prior to trial which will depend on whether the offense may be so punished. He must decide, among other things, whether the accused has the right to obtain a list of veniremen and government witnesses, 18 U. S. C. § 3432, *9whether venue is properly set, 18 U. S. C. § 3235, whether the accused has the benefit of twenty rather than ten peremptory challenges, Federal Rules of Criminal Procedure, Rule 24 (b), whether indictment rather than information is necessary, Federal Rules of Criminal Procedure, Rule 7, and who may bail the accused. 18 U. S. C. § 3141.

This Court has, in recent years, upheld many convictions in the face of questions concerning the sufficiency of the charging papers. Convictions are no longer reversed because of minor and technical deficiencies which did not prejudice the accused. E. g., Hagner v. United States, 285 U. S. 427; Williams v. United States, 341 U. S. 97; United States v. Debrow, 346 U. S. 374. This has been a salutary development in the criminal law. But the substantial safeguards to those charged with serious crimes cannot be eradicated under the guise of technical departures from the rules. The use of indictments in all-cases warranting serious punishment was'the rule at'common law. Ex parte Wilson, 114 U. S. 417; Mackin v. United States, 117 U. S. 348. The Fifth Amendment made the rule mandatory in federal prosecutions in recognition of the fact that the intervention of a grand jury was a substantial safeguard against oppressive and arbitrary proceedings. Ex parte Bain, 121 U. S. 1; Hale v. Henkel, 201 U. S. 43; Toth v. Quarles, 350 U. S. 11, 16. Rule 7 (a) recognizes that this safeguard may be waived, but only in those proceedings which are noncapital. To construe the provisions of.the Rule loosely to permit the use of informations where, as here, the charge .states a capital offense, would do violence to that Rule and would make vulnerable to summary treatment those accused of one of pur most serious crimes. We cannot do this in view of‘the traditional canon of construction which calls for the strict interpretation of criminal statutes and rules in favor of defendants where substantial rights are involved.

*10It is urged that this reshit will fail to protect substantial rights of defendants in other cases. We see no merit in that contention, particularly where the opposite conclusion would deprive defendants, of the protection of a grand jury indictment as required by the Constitution and Rule 7 (a). Under our holding, there is no reason to believe that a defendant in .a case such as this would be surprised on his trial by any possible trickery of the prosecution. If there is no allegation of harm in the indictment, the discovery proceedings afforded in capital cases and the provisions of Rule 7 (f) authorizing bills of particulars will enable the defendant to acquaint himself with the scope of the trial and the criminal transaction to be proved. It is further suggested that it might be in the interests of the defendant to have the benefit of the speed that can be mustered by the filing of an information instead of an indictment. While justice should be administered with dispatch, the essential ingredient is orderly expedition and not mere speed. It is well to note that in this very case the inordinate speed that was. generated through the filing of the information caused many of the difficulties which led the court below to conclude that petitioner had been deprived of due process of láw. Moreover, if, contrary to sound judicial administration in our federal system, arrest and incarceration are followed by inordinate delay prior to indictment, a defendant may, under appropriate circumstances, invoke the protection of the Sixth Amendment.

Under our view of Rule 7 (a), the United States Attorney did not have authority to file an information in this 'case and the waivers made by petitioner were not binding and did not confer power on the convicting court to hear the case. Cf. Ex parte Wilson, supra. The judgment and conviction are reversed and the case is remanded to the District Court with instructions to dismiss the information.

It is so ordered.

Johnny Ray Smith, presently an inmate of Alcatraz, began his career of crime as a juvenile. Soon -thereafter' he escaped from the Federal Correctional Institution at Tallahassee, Florida. At age 26 he had twice been convicted of violations of the Dyer Act, 18 U. S. C. § 2312, was serving 25 years in a Florida prison for armed rob- ■ bery, and had seriously wounded an officer while, fleeing from the scene of the latter crime. He, with two juvenile inmates, escaped the Florida prison, burglarized a house, stole a shotgun, and allegedly kidnaped Alan W. Spear-man, Jr., at shotgun point, while the latter was sitting in his company’s automobile. They forced Spearman to accompany them in the car across the Florida line into Alabama. There, after the release of Spearman, they abandoned the car and were- later arrested in their hiding place under a building. Each admitted guilt and asked for a speedy trial. Smith advised the United States Commissioner, the Federal Bureau of Investigation, the prosecutor and the district judge that he did not want' a lawyer; he waived indictment and venue, pleaded guilty to an information charging kidnaping and threw himself on the mercy of the.court in these words:

“Well, your Honor, I would like for you to take under consideration that there was no viciousness in connection with- this abduction of -this boy. We were nice to him and did not harm him any way and we wanted transportation and did not harm him any at all.” '

Smith received a 30-year sentence; the juveniles 15 years each. ' .He was sent to Alcatraz and from there has prosecuted a series of motións under 28 U. S. C. § 2255, appearing twice to testify in the District Court of Florida. *12The Court of Appeals has considered his case three times and he is now here attacking his sentence on two points : (1) Can a kidnaping charge, where the kidnaped person is released unharmed, be prosecuted by information; and, (2) Is due process violated when the trial judge, before a guilty plea is entered and outside the presence of the accused or his counsel, .confers with an FBI agent concerning the facts of the charge and the prior record of the accused? The Court, without reaching the second question, says that kidnaping can be prosecuted only by indictment and that a charge in the general words of the statute is sufficient.

In attempting to do what it believes to be a great right the Court in reality does a great wrong to the administration of justice. The most serious result is that the Court’s procedure allows the United States Attorney to secure an indictment for a capital offense without the grand jury’s knowing that he is doing so. This deprives kidnaping defendants of the very protection of the Fifth Amendment that the Court professes to be enforcing. The Court also- clouds the meaning of Rule 7 (b) as to waiver of indictment by carving noncapital kidnaping offenses out of its specific permissive terms.

Both the Fifth Amendment and Rule 7 (a) require capital offenses to be prosecuted .by indictment. Kidnaping is not such an offense unless “the kidnaped person has not been liberated unharmed.” 18 U. S. C. § 1201 (a). It is reasonable to say that before one can be prosecuted for the capital offense he must be charged with it, namely, kidnaping where- “the kidnaped person has not been liberated unharmed.” To do otherwise does not place him on notice of the offense for which he is to be tried. The Court, however, holds that § 1201 (a) creates a “single offense . . . [which] is punishable by death if certain proof is introduced at trial.” It reasons that this makes every kidnaping a capital case requiring *13grand jury action. But it does not require that the grand jury consider whether “the kidnaped person has not been liberated unharmed” and so allege in the indictment. Thus the grand jury is deprived of any knowledge of the element of the offense that makes it capital. Hence a grand jury in complete ignorance of the facts as to harm suffered by the victim at the time of release is required to return an indictment which will support the death penalty if proof of such harm is shown at the trial. This puts the law as to capital cases into the hands of the prosecutor, not the grand jury, where both the Fifth Amendment and Rule 7 (a) have lodged it. Nor does it strengthen the grand jury, to use the words of the Court, as a “substantial safeguard against oppressive and arbitrary proceedings.” On the contrary, the Court's reference to discovery proceedings after indictment as a means for acquainting a defendant “with the scope of the trial and the criminal transaction to be proved” clearly shows the fallacy of its position. The grand jury should have this information before it returns a capital charge, otherwise, none should exist, under the indictment. By this reasoning, the Court deprives the defendant of the safeguard of proper grand jury proceedings as required by the Constitution in capital cases. ,. .

Moreover, as the Court says, “[i]t is neither procedurally correct nor practical to await the conclusion of the evidence to determine whether the accused is being prosecuted for a capital offense.” Despite this language, the opinion requires just that since it does not compel the indictment to charge “a capital offense.” I would require capital kidnaping cases to be prosecuted by indictment charging specifically that the kidnaped person was not liberated unharmed.

Turning to. the procedural point under Rule 7 (a) and (b) we should remember it was this Court that adopted these Rules of Criminal Procedure, certified them to the *14Congress, which added its sanction, and then promulgated them. They are simple and clear. Rule 7 (a) provides that an offense “which may” be punished by death must begin by indictment, while a noncapital • offense may be prosecuted by information,- if indictment is waived. Rule 7 (b) repeats that an off ente “which imay” receive a sentence for a term-of'years “may be” begun by information “if the defendant, after he has been advised of the 'nature of the charge and of his rights, waives in open court prosecution by indictment.” In filing the information under the Kidnaping Act, the Gov- ’ ernment forecloses itself from seeking' the death penalty. The Fifth Amendment, as well as Rule 7 (a), wohld prevent it from, reneging on this bargain. The only possible sentence would,- therefore, be one for a term df years. Moreover, Smith knew this full well, as is showp by his own testimony Not only had the United States Attorney so advised but'The United States Commissioner and the district judge had cleárly told Smith of the law in the. matter. His request at sentencing points up his understanding thereof. THa record also, indicates that the requirements!of Rule «7 (b) were scrupulously followed:

The Court, however:! superimposes a- new rule in kidnaping cases by requiring that they pe beg^n only-by indictment. This deprives siich defendants riot only of the , beneficent provisions of Rule '.7(b) but subjects them, to greater jeopardy in that the United States Attorney may insist on the death penalty at trial. 'This leaves open fof play all of the.evils that flesh is heir to, including the ambitions or disfavor of the prosecutor, the animosity of the victim or his malingerings from thé kidnaping as well as other postindictment speculations! In rural districts where the grand jury orily meets twice a year it would also place' considerable hardship on a *15defendant waiting for a grand jury to be empaneled.1 He receives no credit for the time so served and puts the Federal Government to the expense of incarceration in the local jail on a per diem basis. Nor would the calling of a special grand jury solve the problem. It.would not only be very expensive to the Government but burdensome to those called to .serve, likewise taking the time, of the court from other pressing matters, either in its. own district or in others that suffer from congested: dockets. On the other hand, following Rule 7 (b) would' fully-protect society. The defendant would be on notice of the charge against him and would receive the full enjoyment of allof his rights.2 And,: finally, the prosecutor would not be able, at his whim, 'to superinduce the death penalty on an otherwise noncapital, case. In short, justice would be done.

It is true that three Courts of Appeals'have passed on this statute. However, none of those cases is dispositive of the issije here. In Robinson v. United States, 144 F. 2d 392, 396, the indictment alleged that the accused did “beat, injure, bruise and harm [Mrs. Stoll] . . . and did not liberate her unharmed.” It is, therefore, ehtirely inapposite since the indictment specifically alleged a capital offense. United States v. Parker, 103 F. 2d 857, in *16construing the then § 40 of the Judicial Code requiring trial of capital cases to be “had in the county where the offense was committed, where that can be done without great inconvenience,” only decided that the application for change of venue was addressed to the sound discretion of the court, which “was not abused.” It specifically held that “[wjhether such averments [that the victim had been released in a harmed condition] were necessary [in the indictment] to support a demand for the imposition of the death penalty we need not decide . . . .” Id., at ■'861. The court concluded that “since the evidence taken at the trial established that he was liberated ... in a sound and unharmed condition,” ibid., the case, in any even't, was not one in which the death penalty could be imposed. The last case mentioned by the majority is United States v. Parrino, 180 F. 2d 613. That case involved the statute of limitations and the-issue involved here was not, as the court said, “relevant to . . . whether the-second indictment was found in time.” Id., at 615. The Government contended that if the case was “capital” the indictment might be returned at any time. The court held that there was no information in the record as to the condition of the victim at the time of his release. Although it agreed with the Government “that it was not necessary to allege that the victim was not released ‘unharmed’ in order that the jury might recommend the death penalty,” it held that “the accused has to be adequately advised of it [released harmed], since the jury must pass upon it, [and that] it will be enough if he gets the information in season from any source.” Ibid. Certainly the case is not dispositive of the issue here. In fact it supports the proposition that “the accused must be adequately advised ... in season” if the Government claims the victim was released “harmed.” I- say that “adequately advised in season” would be certain only if *17such an allegation was made in the indictment. Whether from a technical standpoint that makes two offenses of the crime of “kidnaping” is, 'therefore, not material. In my view, it does create two such offenses, (1) where the kidnaped person has not been released unharmed, and (2) where hé has been liberated unharmed. In either event we should follow the mandate of the Fifth Amendment and Rule 7 and under our power of supervision oyer federal courts require in the future such procedural safeguards as are outlined herein.

This brings me to the second contention. I shall discuss the facts briefly. The “inordinate speed” which the Court says was present here was not generated by the Government but by the petitioner himself. The record clearly shows his anxiety to have the case concluded and . fails to indicate any objection on his part to the immediate imposition of sentence. The disposition óf cases on information and plea in four to five days, as occurred here, is normal in the federal system. I therefore put no credence in this claim. However, the record does indicate that at the instance of an Assistant United States Attorney a Special Agent of the Federal Bureau of Investigation called upon the trial judge in his chambers and talked at some length about Smith’s background as well as his connection with the kidnaping. This was before Smith had signed any waivers or entered any plea. Neither Smith nor any one representing him was present at the interview. The record shows this contact not to have been covertly made, for at the time of sentence the trial judge in open court told Smith that it had occurred. I do not reach the due process contention, for it appears to me that our duty of supervision over the administration of justice in the federal courts, McNabb v. United States, 318 U. S. 332 (1943), requires reversal because of this interview. In a criminal case, such a private conference *18must be deemed presumptively prejudicial where, in, violation of Fed. Rules Crim. Proc., 32(c)(1),3 it was conducted prior to the plea.

For these reasons I would reverse the judgment with instructipns that Smith be allowed to withdraw his guilty plea' and stand trial, on the information.