From 1945 until his death in 1966, Denton starred in many films, including The Great St. Louis Bank Robbery, The Parent Trap, Birdman of Alcatraz, To Kill a Mockingbird, and Bus Riley's Back in Town. He was also a guest star on many television shows, including Bonanza, Alfred Hitchcock Presents, Gunsmoke, Have Gun Will Travel, The Fugitive, The Donna Reed Show, (1962 episode Once Upon a Timepiece).