Two on a Guillotine

Connie Stevens

— Cassie / Melinda Duquesne

Dean Jones

— Val Henderson

Cesar Romero

— John Harley 'Duke' Duquesne

Parley Baer

— Jules 'Buzzy' Sheridan

Virginia Gregg

— Dolly Bast

Connie Gilchrist

— Ramona Ryerdon

John Hoyt

— Attorney Carl Vickers

Russell Thorson

— Mr. Carmichael (uncredited)

Leon Alton

— Theatre Audience Member (uncredited)

Walter Bacon

— Carnival Patron (uncredited)

Dick Cherney

— Theatre Audience Member (uncredited)

Beulah Christian

— Theatre Audience Member (uncredited)

William Conrad

— Fat Man in Hall of Mirrors (uncredited)

Billy Curtis

— Big Mike (uncredited)

George DeNormand

— Theatre Audience Member (uncredited)

Ayllene Gibbons

— Mourner at Funeral (uncredited)

Bobby Gilbert

— Mourner at Funeral (uncredited)

Jimmie Horan

— Mourner at Funeral (uncredited)

Richard Kiel

— Photographer at Funeral (uncredited)

Ethelreda Leopold

— Theatre Audience Member (uncredited)

Jon Lormer

— Minister at Funeral (uncredited)

Philo McCullough

— Theatre Audience Member (uncredited)

William Meader

— Theatre Audience Member (uncredited)

Joseph Mell

— Reporter at Funeral (uncredited)

Del Moore

— Reporter Joe Russell (uncredited)

George N. Neise

— Reporter at Funeral (uncredited)

Jerry Rush

— Photographer (uncredited)