Cast
- Kurt Jaggberg as Willi Münzenberg
- Günter Mack as Otto Katz
- Willy Semmelrogge as Wladimir
- Hartmut Reck as Hans Schulz
- Günther Jerschke as Karl Radek
- Friedrich G. Beckhaus as Erich Reschke
- Udo Vioff as Kurt Sauerland
- Karl-Heinz von Hassel as Werner Thormann
- Georg Eilert as Emil
- Willem Fricke as Fritz