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)

Joseph Losey

Director

Egisto Macchi

Original Music Composer

Nicholas Mosley

Author

Pasqualino De Santis

Director of Photography

Peter T. Davies

Sound Recordist

Franco Solinas

Screenplay

Annalisa Nasalli-Rocca

Costume Design

Josef Shaftel

Executive Producer

Norman Priggen

Producer

Joseph Losey

Executive Producer

Reginald Beck

Editor

Masolino D'Amico

Screenplay

Arrigo Equini

Art Direction

Richard Macdonald

Production Design