- as Dr. Eberhard Scheu
- as Dr. Robert M. Voss
- as Dr. Samuel 'Sammy' Müller
- as Dr. Maria Jaspers
- as Dr. Farouk Bennacef
- as Dr. Eva Claassen
- as Gisela Ebert
- as Helmut Brenneke
- as Veronica Bleibtreu
- as Sabine 'Bine' Emmerich
- as Dorothea Wegener
- as Hans Sturm
- as Gudrun Sander
- as Bernd Sander
- as Niklas Sander
- as Olga Naumann
- as Olaf Döll
- as Carmen Döll
- as Frank Jäger
- as Monika Jäger
- as Felix Jäger
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