About
Starred as the eponymous roles of TV's Mike Hammer on Mickey Spillane's Mike Hammer and Kolchak of Kolchak: The Night Stalker.
Before Fame
He was placed in three different orphanages before ending up in a boy's home on a ranch after his parents divorced.
Trivia
In 1960, he starred in a TV series called Riverboat.
Family Life
He married Melanie York in 1944, and together they had four children.
Associated With
He has been compared with Robert Conrad for doing his own stunts.
