The Golden State Killer was a serial killer, burglar and sexual abuser active from 1979 to 1986 in California.
Despite having murdered 12 people, he evaded capture for over 40 years, failing to be correctly identified.
Late author Michelle Eileen McNamara wrote the book I'll Be Gone In The Dark on the killer who was then known as the East Area Rapist and the Original Night Stalker.
As well as coining the term Golden State Killer she made the case famous shedding new light on the investigation however, she died before the book was complete.
Her husband, and King Of Queens star, Patton Oswalt worked with journalist Billy Jensen and researcher Paul Haynes to finish the book which went on to be a best seller.
Yesterday Sacramento police arrested 72 year old suspect Joseph James DeAngelo who they presume to be the Golden State Killer.
He was a former police officer who left the force after he was caught shoplifting.
Patton Oswalt appeared on the Late Night with Seth Meyers yesterday and discussed the case and Michelle's work.