Paul Michael Glaser
— Harry Houdini
Sally Struthers
— Bess Houdini
Ruth Gordon
— Cecilia Weiss
Vivian Vance
— Minnie
Adrienne Barbeau
— Daisy White
Bill Bixby
— Rev. Arthur Ford
Jack Carter
— Theo Weiss
Peter Cushing
— Sir Arthur Conan Doyle
Nina Foch
— Reverend Le Veyne
Wilfrid Hyde-White
— Superintendent Melville
Geoffrey Lewis
— Dr. Crandon
Maureen O'Sullivan
— Lady Conan Doyle
Clive Revill
— Dundas Slater
Barbara Rhoades
— Margery Crandon
Marilyn Brodnick
— Dorothy Weiss
Patrick Culliton
— Franz Kukla
Richard Kennedy
— Pub Policeman
Karin Collison
— Barmaid
Jan Stratton
— Hotel Maid
