Robert Stack, who played Eliot Ness in "The Untouchables" and hosted "Unsolved Mysteries", died of heart failure in 2003. He had a long film career and worked with Spencer.
Actor Robert Stack
Robert Stack was an actor known for his roles in The Untouchables, Unsolved Mysteries, and Airplane. He was born in Los Angeles, served in the Navy, and won an Emmy and an Oscar.