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)

Harry Cooper as Conference Attendee (uncredited)

Frank Dolan as Eddie (uncredited)

Randee Lynne Jensen as Woman (uncredited)

Ralph Nelson as Convention Speaker (uncredited)

Donald Warnock as Conference Attendee (uncredited)