David Porter

Stewart Granger

Acting

Glenn Cassidy

Lex Barker

Acting

Agent Brice

Pierre Brice

Acting

Denise (Rio segment)

Karin Dor

Acting

Karl (Vienna segment)

Walter Giller

Acting

Monique Carrar (Vienna segment)

Johanna Matz

Acting

Gomez (Rio segment)

Klaus Kinski

Acting

Professor Alden (Frame story)

Richard Münch

Acting

Wendt, Suspected girls' killer (Frame story)

Peter Vogel

Acting

Lotty (Vienna segment)

Pascale Petit

Acting

Nelly Small (Rio segment)

Agnès Spaak

Acting

Thug #2 (Vienna segment) (uncredited)

Herbert Fux

Acting

Hans, Thug #1 (Vienna segment) (uncredited)

Harald Dietl

Acting

Doorman (Vienna segment) (uncredited)

Raoul Retzer

Acting

Agent Linda (Rome segment)

Margaret Lee

Acting

Pessana (Rio segment)

Roberto Miali

Acting

Female boss (Rome segment)

Carla Calò

Acting

Joana (Rio segment)

Carmen G. Cervera

Acting

Ray Runner (Rio segment)

Allen Pinson

Acting

Harry Brenton (Rio segment)

Fregolente

Acting

Gigi (Rome segment) (unconfirmed)

Kim Camba

Acting

Taxi driver (Rome segment) (uncredited)

Fortunato Arena

Acting

Professor (Rome segment) (uncredited)

Alberto Bonucci

Acting

Gangster #2 (Rome segment) (uncredited)

Pietro Ceccarelli

Acting

Gangster #4 (Rome segment) (uncredited)

Spartaco Conversi

Acting

Gangster #3 (Rome segment) (uncredited)

Franco Daddi

Acting

Sergej (Vienna segment) (uncredited)

Robert Favart

Acting

Kurt Waldeck (Vienna segment) (uncredited)

Michael Janisch

Acting

President (Rio segment) (uncredited)

José Lewgoy

Acting

Ivan (Rome segment) (uncredited)

Luciano Pigozzi

Acting