Thriller

Boris Karloff

Self - Host

Henry Daniell

Count Alexander Cagliostro

Peter Brocco

Padre Herrera

Ed Nelson

Brundage

Paul Newlan

Joe Henshaw

Doris Lloyd

Landlady

Audrey Dalton

Nesta Roberts

Alan Napier

Attorney Pinchot

Alan Caillou

Roscoe Burton

Edward Andrews

Maynard Thispin

Ronald Howard

Robert Penrose

Bernard Fein

Stage Manager

Richard Reeves

Truck Driver (uncredited)

Linda Watkins

Arabella Foote

J. Pat O'Malley

Street Singer

Mary Grace Canfield

Celia Perry

Charles Aidman

Jerry Welch

Robert Middleton

Monsieur de Paris

Abraham Sofaer

Nicolai

George Mitchell

Doc Mulloy

Constance Ford

Connie Walworth

K.T. Stevens

Olive Guthrie

Tom Nolan

Hank Hattering

Elizabeth Allen

Liz Talmadge