Trudy Marshall

as Carol Northrup

Ronald Graham

as Dr. Hugh Mayberry

Anthony Quinn

as Michael Romanescue

Sheila Ryan

as Jerry Dailey

Robert Bailey

as Dr. Stephen Craig

Robin Raymond

as Vicky O'Reilly

Doris Merrick

as Susan

Carleton G. Young

as Federal Investigator

Beverly Whitney

as Helen

Jackie Paley

as Adelaide

Jo-Carroll Dennison

as Frieda

John Philliber

as Mother Henry

Bess Flowers

as Pedestrian looking for a taxi (uncredited)

Byron Foulger

as Desk Clerk (uncredited)

Sue Moore

as Taxi Driver (uncredited)

Mary Field

as Nurse's Aide (uncredited)

Pierre Watkin

as Dr. John Crane (uncredited)

Nella Walker

as Mrs. Crane (uncredited)