Thomas Gilbert Sr., a 70-year-old hedge fund founder, was found shot in the head in his Manhattan apartment on January 4, 2015. The scene was staged to look like a suicide, with a gun placed on his chest. His wife, Shelley Gilbert, discovered the body and identified their son, Thomas Gilbert Jr., as the perpetrator during a 911 call.

Prosecutors said the motive was financial: Gilbert Jr., who had been supported by his parents and was reportedly unemployed, became enraged after his father reduced his weekly allowance, a move described as an attempt to encourage psychiatric treatment for escalating mental-health problems. Gilbert Jr. was arrested and charged with second-degree murder and criminal possession of a weapon.

At trial the defense conceded that Gilbert Jr. killed his father but argued not guilty by reason of insanity, citing a long history of diagnosed mental illness including paranoia, depression, and obsessive-compulsive disorder. The jury rejected the insanity defense, finding him guilty of second-degree murder and two counts of criminal possession of a weapon; he was sentenced to 30 years to life in prison.

Does anyone have information about Gilbert Sr.’s life in Manhattan or the circumstances leading up to January 4, 2015?