George Majeroni

as The Tenor (as Giorgio Majeroni)

as Alessandro Orsini

as Dr. Joe

as Wasson

as Rodney Foster

as George Cowper

as Milton Shapiro

as Oliver Landis

as Dr. Emilio Toranno

as Bolo Pasha

as Robert Ashton

as Paul Hollister

as Edward Blandish

as Juan de Lima

as Evan Vrooman

as Dromiroff

as Count Orloff

as Rene Lidal

as Ibraham

as Dr. Von Gahl

as Tigellinus