Uschi Glas as Katja Hutten

Walter Giller as Dr. Wagner

Anita Kupsch as Manuela Schulz

Willy Millowitsch as Willy Schulz

Werner Finck as Direktor Dr. Zibelius

Wolfgang Condrus as Klaus Fuchs

Rudolf Schündler as Dr. Krapp-Krapproth

Inge Wolffberg as Dr. Sieglinde Boll

Ulrich Beiger as Prof. Hasemann

Siegfried Schürenberg as Chefredakteur Berg

Tilly Lauenstein as Marianne Kettelhut

Harald Dietl as Peter Keuthmann

Gerd Lohmeyer as Siegfried Pelzig

Hans Terofal as Kapellmeister

Herbert Weißbach as Zwillich

Stephan Schwartz as Schüler