State v. Prather, 810 S.E.2d 419

Background

Defendant Robert Jared Prather was retried for murder, armed robbery, and burglary after a first trial resulted in a hung jury; jury convicted him of murder and robbery and he was sentenced to concurrent terms.
At trial Prather admitted striking the victim three times in self-defense but denied carving the word "rapist," placing a dildo by the body, or covering the victim with a blanket.
State called SLED agent Paul LaRosa on rebuttal (reply) after the defense rested; LaRosa had reviewed photographs, video, autopsy, and reports but did not personally view the scene.
LaRosa testified about "staging" and "undoing," opining the scene showed two distinct personalities and therefore two offenders; he did not identify who committed which acts.
Prather objected that LaRosa's testimony was improper rebuttal, speculative, and beyond his qualifications; trial court admitted the testimony and cautioned no identification of specific actors.
Court of Appeals reversed: held LaRosa's testimony was improper reply (it completed the State's case‑in‑chief rather than rebutted specific defense testimony) and the error was not harmless; ordered a new trial.

Issues

Issue	Plaintiff's Argument (State)	Defendant's Argument (Prather)	Held
Admissibility of expert "reply" testimony	LaRosa rebutted Prather's claim he left and others committed subsequent acts; reply allowed to contradict defense testimony	LaRosa's testimony was not limited to refuting specific defense testimony, was speculative, and invaded the jury's province	Reversed: admission abused discretion because testimony went beyond rebuttal and effectively completed State's case-in-chief
Reliability / qualification of expert	LaRosa had SLED training and prior expert testimony; admissibility is threshold question for court, weight for jury	Testimony lacked scientific validity, LaRosa hadn't examined scene in person or reviewed full victimology/mental histories	Majority: did not resolve general reliability rule; found particular testimony suspect but decision rests on reply-error, not general admissibility
Harmless-error analysis	Any error was harmless because Prather admitted assault and LaRosa did not specifically identify Prather as the second perpetrator	LaRosa's expert framing (staging/undoing), plus bolstering (others agreed), likely caused jury to infer Prather's involvement; prior hung jury suggests case was close	Reversed: error not harmless beyond a reasonable doubt; LaRosa's testimony likely contributed to conviction
Use of redacted codefendant statement / other preserved issues	Redacted portions permitted; not a Confrontation Clause violation because statement not incriminating on its face	Admission (and other later objections) deprived Prather of confrontation and fairness	Majority did not reach many remaining issues because reply ruling was dispositive; dissent addressed and would have affirmed on these other points

Key Cases Cited

State v. White, 382 S.C. 265, 676 S.E.2d 684 (expert qualification threshold; defects go to weight, not admissibility)
State v. Todd, 290 S.C. 212, 349 S.E.2d 339 (admission of reply testimony is within trial court discretion)
State v. Huckabee, 388 S.C. 232, 694 S.E.2d 781 (reply testimony must rebut matters raised by defense; contradictory reply may be admissible)
State v. Durden, 264 S.C. 86, 212 S.E.2d 587 (reply testimony limited to refutation of defense testimony)
State v. Garris, 394 S.C. 336, 714 S.E.2d 888 (reply expert properly limited to rebut defendant's assertions)
State v. McDowell, 272 S.C. 203, 249 S.E.2d 916 (expert reply admissible where it directly rebutted defendant's testimony)
State v. Mitchell, 286 S.C. 572, 336 S.E.2d 150 (harmless error standard: whether error could reasonably have affected result)
State v. Tapp, 398 S.C. 376, 728 S.E.2d 468 (appellate review focuses on whether error contributed to verdict)
State v. Kromah, 401 S.C. 340, 737 S.E.2d 490 (jurors may give undue weight to expert testimony)