Werner Bruhns

as Henner

as Ottavio Berlinghieri

as Preston Drake

as Herr Habinger (1 episode)

as Hoffmann

as Vance

as Professor Falk

as Stefan Prager

as Mario Tirelli (1 episode)

as Lee Warren

as Eberhard Morrisey

as John Middleton

as Mezger (1 episode), as Horst Lippens (1 episode), as Harald Oppermann (1 episode), as Pallmert (1 episode)

as Minotti (3 episodes)

as Hauptkommissar Bossum

as Jocelyn Pentecost

as Höfer (1 episode), as Richard Kapp (1 episode)

as Frédéric de Rubeck

as Gerard Lemaire

as Kommissar

as Robert Wernicke (1 episode)

as Igor Guzenko

as Dr. Carl Hau

as Riabowski