Paul Douglas
Police Ofcr. Charlie Dunnigan
Richard Basehart
Robert Cosick
Barbara Bel Geddes
Virginia Foster
Debra Paget
Ruth
Agnes Moorehead
Christine Hill Cosick
Robert Keith
Paul E. Cosick
Howard Da Silva
Deputy Police Chief Moskar
Jeffrey Hunter
Danny Klempner
Martin Gabel
Dr. Strauss
Grace Kelly
Mrs. Louise Ann Fuller
Frank Faylen
Walter, room service waiter
Jeff Corey
Police Sgt. Farley
James Millican
Police Sgt. Boyle
Donald Randolph
Dr. Benson
Richard Beymer
(uncredited)
Ossie Davis
Cab Driver (uncredited)
Brad Dexter
Reporter (uncredited)
Leif Erickson
Bit Part (uncredited)
Sandra Gould
Hotel Switchboard Operator (uncredited)
Russell Hicks
Regan, Hotel Manager (uncredited)
Brian Keith
Extra (uncredited)
Harvey Lembeck
Cab Driver (uncredited)
John Randolph
Fireman (uncredited)
Janice Rule
Bit Part (uncredited)
Joyce Van Patten
Barbara (uncredited)
Willard Waterman
Mr. Harris (uncredited)
John Cassavetes
Reporter (uncredited)
Rusty Lane
Cop (uncredited)
Alix Talton
Miss Kelly (uncredited)