Law & Order: Special Victims Unit

Observed by an FBI psychiatrist, the detectives uncover a horrifying motive for the slaying of a software company employee by a fired colleague when they learn of the suspect's true relationship with his overbearing mother.

The team searches for a serial killer (Richard Thomas) who justifies his crimes with paranoid religious motivation set on by a rapidly deteriorating medical condition. Even though she knows that he has been driven to kill, his wife (Karen Allen) begs the prosecutors to show leniency because of his condition.