Richard Greene

Character: Count Alexei Orloff

Valentina Cortese

Character: Elizabeth, Princess Tarakanova

Binnie Barnes

Character: Catherine - Empress of Russia

Greta Gynt

Character: Countess Loradona Camponiello

Charles Goldner

Character: General Korsakov

Walter Rilla

Character: Prince Radziwill

Hugh French

Character: Captain Sergei Nikolsky

Dennis Vance

Character: Vasska, Orloff's Aide

William Tubbs

Character: Boris

Dino Galvani

Character: Russian Ambassador

Ewan Roberts

Character: Ship's Doctor