Approximately 15,000 homicides occurred annually over the past decade, with racial minorities, men, and people under age 25 disproportionately represented as both homicide victims and offenders (1, 2). The trauma inflicted by homicide touches victims, families, the com- munity, and offenders. Forensic mental health practitioners are regularly called to testify in court proceedings of homi- cide defendants, yet data on the psychiatric characteristics of individuals accused of homicide in the United States remain limited. Additional empirical information about the relationship between psychiatric disorders and homicide could help inform both policy and practice regarding this enduring social problem.