Eugene Walter Barrett (June 30, 1931 – November 8, 2003) was an American serial killer who murdered three women he was romantically involved with in Honolulu, Hawaii from 1959 to 1995.

[2] At some point after his discharge, he returned to Honolulu, where he began a romantic relationship with a woman named Annie E. Phillips, a divorced mother of five children.

Barrett, a house painter by profession, was unemployed and drank excessively, eventually leading to Phillips severing ties with him in 1959.

[3] Barrett then walked across the living room, where two of Phillips' children were watching TV, and went into the bedroom, where he found her tending to her youngest child.

Their marriage was short-lived, as she filed for divorce in November 1972, citing her husband's excessive drinking as the primary factor for this action.

[2] For the remainder of the 1980s, Barrett resided in an apartment complex on Kinau Street in relative peace, but continued to drink and exhibit unstable emotional behavior.

[6] While there was no confirmed intimate relationship between the pair, Barrett privately accused Kastner of mocking him by dating other men and supposedly indecently exposing herself in front of him.

[6] Police examining the crime scene located the supposed murder weapon, which was reported as stolen back in 1989, dumped near the apartment complex.

[2] At the preliminary hearings, Kastner's son, Ethan, was called in to testify against Barrett, making him one of the youngest witnesses to take the stand in the state's history.

[12] At the trial itself, Barrett's attorney reiterated that his client's actions were the result of Kastner's perceived mistreatment of him, which eventually led to him snapping and killing her in a fit of rage.