Psychological thriller that focuses on the intense conflict between a university professor and a blackmailer.
| Actor | Role |
|---|---|
 Klaus SchwarzkopfProfessor Kolczyk | Professor Kolczyk |
 Elke SommerMiezi | Miezi |
 Jürgen ProchnowBernd Ziegenhals | Bernd Ziegenhals |
 Ulla JacobssonReinhild Kolczyk | Reinhild Kolczyk |
 Kristina NelGinny Kolczyk | Ginny Kolczyk |
 Walter GrossOpa Melzer | Opa Melzer |
 Anita KupschSekretärin | Sekretärin |
 Berta DrewsMutter Braats | Mutter Braats |
 Otto SanderRulle Ruhlsdorff | Rulle Ruhlsdorff |
 Claus Theo GärtnerKronert | Kronert |
 Peter SchiffKommissar Rannow | Kommissar Rannow |
 Ortrud BeginnenBabsy | Babsy |
 Wolf RothHohenberg | Hohenberg |
 Fritz TillmannDr. Sievers | Dr. Sievers |
 Tilo PrücknerDrögnitz | Drögnitz |
 Gunther BethKronert | Kronert |
| UUlrich BödeckerNot listed | Not listed |
| MMax GieseNot listed | Not listed |
 Gerhard WollnerNot listed | Not listed |