[url]http://www.cnn.com/2003/SHOWBIZ/TV/05/15/obit.stack.ap/index.html[/url]
LOS ANGELES, California (AP) -- Robert Stack, whose granite-eyed stare and menacing baritone spelled trouble for fictional criminals in TV's "The Untouchables" and real ones in "Unsolved Mysteries," died at his home. He was 84.
Stack's wife Rosemarie found him slumped over in the couple's Los Angeles home about 5 p.m. Wednesday. The actor underwent radiation treatment for prostate cancer in October, but his wife said he died of heart failure.
"He was feeling so good," she said Thursday. "He had a bout with a tumor but that was gone. It wasn't that, it was his heart. He was too weak. He wouldn't have lived through a bypass."
Although he had a lengthy film career beginning in 1939 with "First Love," Stack's greatest fame came with the 1959-63 TV drama "The Untouchables," in which he played Chicago crimebuster Eliot Ness and won a best actor Emmy.
That role, coupled with his job as host of the reality series "Unsolved Mysteries," created an enduring good-guy image.