- as Dr. Joachim Brotesser
- as Dr. Eberhard Scheu
- as Dr. Franz Pacek
- as Dr. Martina Behrend
- as Dr. Robert M. Voss
- as Dr. Nasrin Fichtel
- as Gisela Ebert
- as Helmut Brenneke
- as Andreas Schenk
- as Sabine 'Bine' Emmerich
- as Dorothea Wegener
- as Lukas Schmidt
- as Heiner Kampen
- as Melanie Schönborn (as Nina Sonja Peterson)
- as Solveig Grünenberg
- as Irene Grünenberg (as Nico Le Bourgeois)
- as Vater Grünenberg
- as Kalle
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