Bud Abbott and Lou Costello Meet the Killer, Boris Karloff

Donna Martell

Betty Crandall

Alan Mowbray

Melton

James Flavin

Insp. Wellman

Roland Winters

T. Hanley Brooks

Nicholas Joy

Amos Strickland

Mikel Conrad

Sgt. Stone

Morgan Farley

Gregory Milford

Victoria Horne

Mrs. Hargreave

Percy Helton

Abernathy

Claire Du Brey

Mrs. Grimsby

Harry Hayden

Lawrence Crandall

Vincent Renno

Mike Relia

Murray Alper

Joe, Reporter (uncredited)

Bobby Barber

Dry Cleaning Man (uncredited)

Marjorie Bennett

Second Maid (uncredited)

Gail Bonney

First Maid (uncredited)

Harry Brown

Medical Examiner (uncredited)

Jack Chefe

Barber (uncredited)

Eddie Coke

Reporter (uncredited)