An experiment on a simpleton turns him into a genius. When he discovers what has been done to him he struggles with whether or not what was done to him was right.
Cliff Robertson
as Charlie Gordon
Claire Bloom
as Alice Kinian
Lilia Skala
as Dr. Anna Straus
Leon Janney
as Dr. Richard Nemur
Ruth White
as Mrs. Apple
Dick Van Patten
as Bert
Edward McNally
as Gimpy
Barney Martin
as Hank
William Dwyer
as Joey
Dan Morgan
as Paddy
Marianna Case
as Young Woman (uncredited)
Leon Collins
as Tap Dancer (uncredited)
