Mangrum v. Georgia

Annotate this Case
Justia Opinion Summary

In December 2005, Appellant Jamerson Mangrum was found guilty of numerous crimes related to the death of 15-year-old Katie Hamlin in July 2002, including three counts of felony murder, two counts of aggravated child molestation, and one count each of rape, abandoning a dead body, concealing a death, and tampering with evidence. After his motion for new trial was denied, Appellant obtained new counsel and appealed to the Supreme Court, alleging numerous grounds for reversal. In its first review of this case, the Court rejected all of his arguments except for his claim of ineffective assistance of trial counsel, which was remanded to the trial court for a hearing. In 2011, the trial court held a hearing on the ineffective assistance claim. The only witness at the hearing was Appellant's trial counsel, Jimmy Berry. At the hearing, Appellant's new counsel attempted to show that Berry unreasonably failed to support his theory that the victim's medications caused her to have a seizure and asphyxiate and to investigate the possibility that her failure to take her medications caused her death. However, new counsel did not offer any of the victim's medical records or present any expert medical testimony at the hearing. The the trial court denied Appellant's ineffective assistance claim. He appealed that ruling. Upon review, the Supreme Court found that Appellant was required to offer more than "mere speculation" that the victim's medical records and expert testimony would have bolstered his defense at trial for his ineffectiveness claim. He failed to do so, offering no evidence at the hearing as to the victim's medical records or how their introduction or the introduction of testimony about them would have changed the outcome of his trial. Appellant therefore failed to establish ineffective assistance of counsel, and the trial court correctly denied his claim.

Download PDF
In the Supreme Court of Georgia Decided: September 10, 2012 S12A0875. MANGRUM v. THE STATE. NAHMIAS, Justice. This is the second appearance of this case before this Court. In December 2005, Appellant Jamerson Mangrum was found guilty of numerous crimes related to the death of 15-year-old Katie Hamlin in July 2002, including three counts of felony murder, two counts of aggravated child molestation, and one count each of rape, abandoning a dead body, concealing a death, and tampering with evidence. After his motion for new trial was denied, Appellant obtained new counsel and appealed to this Court, alleging numerous grounds for reversal. In Mangrum v. State, 285 Ga. 676 (681 SE2d 130) (2009), we rejected all of his arguments except for his claim of ineffective assistance of trial counsel, which we remanded to the trial court for a hearing. See id. at 683. On March 23, 2011, the trial court held a hearing on the ineffective assistance claim. The only witness at the hearing was Appellant s trial counsel, Jimmy Berry. At trial, the State s theory was that the victim died from compressive asphyxiation while being forcibly restrained during a sexual assault. Appellant s principal defense was alibi. However, through crossexamination, Berry also tried to suggest that the cause of death could have been a seizure caused by medications prescribed for the victim, including Risperdal, an anti-psychotic drug used to treat schizophrenia.1 At the hearing, Appellant s new counsel attempted to show that Berry unreasonably failed to support his theory that the victim s medications caused her to have a seizure and asphyxiate and to investigate the possibility that her failure to take her medications caused her death. However, new counsel did not offer any of the victim s medical records or present any expert medical testimony at the hearing. On April 18, 2011, the trial court denied Appellant s ineffective assistance claim. He appeals that ruling.2 To prevail on a claim of ineffective assistance of counsel, Appellant must show that his trial counsel provided deficient performance and that, but for that unprofessional performance, there is a reasonable probability that the outcome of the proceeding would have been different. See Strickland v. Washington, 466 U.S. 668, 687, 694 (104 SC 2052, 80 LEd2d 674) (1984). In examining an ineffectiveness claim, a court need not address both components of 1 The State had provided Berry with a list of the prescribed medications, although a toxicology report showed that the victim was not taking Risperdal when she died. 2 On the day of the hearing, Appellant filed a motion to permit the supplementation of evidence and a motion for scientific testing, but the trial court also denied those motions in the April 18 order. Appellant has not appealed that ruling. 2 the inquiry if the defendant makes an insufficient showing on one. In particular, a court need not determine whether counsel s performance was deficient before examining the prejudice suffered by the defendant as a result of the alleged deficiencies. Id. at 697. Watkins v. State, 289 Ga. 359, 362 (711 SE2d 655) (2011) (citation omitted). Appellant contends that his trial counsel was deficient in failing to procure and offer medical evidence concerning the supposed causal link between the victim s mental condition and medications and her death. To show prejudice from this alleged deficiency, however, Appellant was required to offer more than mere speculation that the victim s medical records and expert testimony would have bolstered his defense at trial. Dickens v. State, 280 Ga. 320, 323 (458 SE2d 623) (1995). He failed to do so, offering no evidence at the hearing as to the victim s medical records or how their introduction or the introduction of testimony about them would have changed the outcome of his trial. Appellant therefore failed to establish ineffective assistance of counsel, and the trial court correctly denied his claim. See Hambrick v. Brannen, 289 Ga. 682, 684-685 (715 SE2d 89) (2011) (rejecting an ineffective assistance claim where the defendant offered nothing but speculation that an investigation of the defendant s mental health would have been favorable to the defense). Judgment affirmed. All the Justices concur. 3

Some case metadata and case summaries were written with the help of AI, which can produce inaccuracies. You should read the full case before relying on it for legal research purposes.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.