Cite as: 506 U. S. 534 (1993)
Opinion of the Court
if prejudice is shown; rather, it leaves the tailoring of the relief to be granted, if any, to the district court's sound discretion. See, e. g., United States v. Lane, 474 U. S. 438, 449, n. 12 (1986); Opper, supra, at 95.
We believe that, when defendants properly have been
joined under Rule 8(b), a district court should grant a severance under Rule 14 only if there is a serious risk that a joint trial would compromise a specific trial right of one of the defendants, or prevent the jury from making a reliable judgment about guilt or innocence. Such a risk might occur when evidence that the jury should not consider against a defendant and that would not be admissible if a defendant were tried alone is admitted against a codefendant. For example, evidence of a codefendant's wrongdoing in some circumstances erroneously could lead a jury to conclude that a defendant was guilty. When many defendants are tried together in a complex case and they have markedly different degrees of culpability, this risk of prejudice is heightened. See Kotteakos v. United States, 328 U. S. 750, 774-775 (1946). Evidence that is probative of a defendant's guilt but technically admissible only against a codefendant also might present a risk of prejudice. See Bruton v. United States, 391 U. S. 123 (1968). Conversely, a defendant might suffer prejudice if essential exculpatory evidence that would be available to a defendant tried alone were unavailable in a joint trial. See, e. g., Tifford v. Wainwright, 588 F. 2d 954 (CA5 1979) (per curiam). The risk of prejudice will vary with the facts in each case, and district courts may find prejudice in situations not discussed here. When the risk of prejudice is high, a district court is more likely to determine that separate trials are necessary, but, as we indicated in Richardson v. Marsh, less drastic measures, such as limiting instructions, often will suffice to cure any risk of prejudice. See 481 U. S., at 211.
Turning to the facts of this case, we note that petitioners
do not articulate any specific instances of prejudice. In-
539
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