During his 1980 trial, evidence against the serial killer was so strong that his guilt was not in question. Instead, the case hinged on whether he'd been legally insane when he killed.
Newlywed Lisa Techel, 23, was pregnant and asleep in bed in her Iowa home, when she was shot to death by her husband, Seth, in May 2012.
Robyn Maharaj, co-author of 'Grilling Dahmer' with Milwaukee detective Patrick Kennedy, tells us about the late detective's experience with the serial killer.
Advocates for Lyle and Erik Menendez, who murdered their parents in 1989, recently initiated a petition to Governor Gavin Newsom to free the siblings. After more than 30 years behind bars, is there any chance they will walk out of prison?
On January 13, 1992, the serial killer changed his plea from not guilty to guilty but insane, which removed the need for a criminal trial and forced the verdict to be based on the jury's decision of his mental state.