Kirk Douglas

Steve Wallace

Giuliano Gemma

Marco

Florinda Bolkan

Anna

Wolfgang Preiss

Miller

Reinhard Kolldehoff

Detective Hoffman

Romano Puppo

Miller's Lieutenant

Bruno Corazzari

Eric

John Bartha

Murdered Security Guard

Allen Stanley

Vittorio Fanfoni

Luigi Antonio Guerra

Michele Lupo

Director

Michele Lupo

Writer

Mino Roli

Writer

Nico Ducci

Writer

Manolo Bolognini

Producer

Marina Cicogna

Producer

Ennio Morricone

Original Music Composer

Antonietta Zita

Editor

Francesco Bronzi

Art Direction

Roberto Leoni

Story

Tonino Delli Colli

Director of Photography