The daughter of a dead magician who accidentally killed his wife, her mother, while performing a guillotine trick must spend the night in his house in order to collect her inheritance. Is the house haunted or is it all magic?

Connie Stevens
as Cassie / Melinda Duquesne

Dean Jones
as Val Henderson

Cesar Romero
as John Harley 'Duke' Duquesne

Parley Baer
as Jules 'Buzzy' Sheridan

Virginia Gregg
as Dolly Bast

Connie Gilchrist
as Ramona Ryerdon

John Hoyt
as Attorney Carl Vickers

Russell Thorson
as Mr. Carmichael (uncredited)

Leon Alton
as Theatre Audience Member (uncredited)

Walter Bacon
as Carnival Patron (uncredited)