Reparto y equipo

Joseph Losey

Richard Burton Leon Trotsky

Alain Delon Frank Jackson

Romy Schneider Gita Samuels

Valentina Cortese Natalia Trotsky

Duilio Del Prete Felipe

Enrico Maria Salerno Salazar

Luigi Vannucchi Ruiz

Jean Desailly Alfred Rosmer

Simone Valère Marguerite Rosmer

Peter Chatel Otto

Giorgio Albertazzi

Carlos Miranda Sheldon Harte

Claudio Brook Roberto (uncredited)

Norman Priggen

Egisto Macchi

Pasqualino De Santis

Reginald Beck