Terence Stamp as Freddie Clegg

Samantha Eggar as Miranda Grey

Mona Washbourne as Aunt Annie

Maurice Dallimore as The Neighbor

Edina Ronay as Nurse / Next Victim (uncredited)

Kenneth More as Miranda’s Older Friend (uncredited)

Allyson Ames as First Victim (uncredited)

David Haviland as Clerk (uncredited)

Gordon Barclay as Clerk (uncredited)