Ray Milland as Harry Flexner

Elsa Lanchester as Julia Hawthorn

Maurice Evans as Inspector Daniels

John Carradine as Claude Dupree

Lisa Lu as Madame Yang

Broderick Crawford as Amos Burns

Mark Edwards as Sergeant Michael Hawks

Louis Hayward as Tim Fowley

Patric Knowles as Mr. Southcott

Steven Marlo as Karkov

Nicole Shelby as Margaret Collins

Shani Wallis as Laurie Mell

Ben Wright as First Constable

Mathilda Calnan as First Charwoman

Peggy Stewart as Second Charwoman

Leslie Thompson as Constable Parker

Don Herbert as Jack the Ripper Wax Figure

Judy Wetmore as Lizzie Borden Wax Figure

Jo Williamson as Mrs. Borden Wax Figure

George Farina as Bluebeard Wax Figure

Diane Wahrman as Girl in Red Wax Figure

Rosa Huerta as Lucretia Borgia Wax Figure

Ben Brown as Attila the Hun Wax Figure

Rickie Weir as Marie Antoinette Wax Figure

Paul Wilson as Ivan the Terrible Wax Figure

Ralph Cunningham as Willie Grossman Wax Figure

Don Williamson as Constable Henry Bolt Wax Figure

Evelyn Reynolds as Flower Woman Wax Figure

Sandy Helberg as Newsboy (Uncredited)

Max Wagner as Music Hall Drunk (Uncredited)