Steele starred in a string of horror films, including Black Sunday (1960), The Horrible Dr. Hichcock (1962), The Ghost (1963) directed by Riccardo Freda, The Long Hair of Death (1964) and Roger Corman's 1961 adaptation of Edgar Allan Poe's short story The Pit and the Pendulum, among others. She also starred in Castle of Blood (1964), Terror-Creatures from the Grave and Nightmare Castle (both 1965), and Curse of the Crimson Altar (1968).