Peter Simonischek as Andreas Lenz/Sgt. Andrew Lenz

Helmut Berger as Christoffel

Brigitte Karner as Leonore Einstein

Annette Uhlen as Josepha Wundt

Dominique Horwitz as Amand Goegg

Ulrich Tukur as Friedrich Engels

Christoph Waltz as Franz Sigel

Dominic Raacke as Heilig

Uwe Ochsenknecht as Rinckleff

Karl Merkatz as Böning

Otto Mächtlinger as Bankier Einstein

Hans Walter Klein as Brentano

Wilfried Baasner as Glaubnitz

Rainer Steffen as Mördes

Michael Maassen as Gustav Struve

Hilde Berger as Amalie Struve

Dieter Traier as Becker