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)

Nicholas Mosley

Author

Pasqualino De Santis

Director of Photography

Egisto Macchi

Original Music Composer

Joseph Losey

Director

Peter T. Davies

Sound Recordist

Annalisa Nasalli-Rocca

Costume Design

Franco Solinas

Screenplay

Richard Macdonald

Production Design

Joseph Losey

Executive Producer

Josef Shaftel

Executive Producer

Reginald Beck

Editor

Arrigo Equini

Art Direction

Norman Priggen

Producer

Masolino D'Amico

Screenplay