Richard Greene

Count Alexei Orloff

Valentina Cortese

Elizabeth, Princess Tarakanova

Binnie Barnes

Catherine - Empress of Russia

Greta Gynt

Countess Loradona Camponiello

Charles Goldner

General Korsakov

Walter Rilla

Prince Radziwill

Hugh French

Captain Sergei Nikolsky

Dennis Vance

Vasska, Orloff's Aide

William Tubbs

Boris

Dino Galvani

Russian Ambassador

Ewan Roberts

Ship's Doctor

Sidney Salkow