| Name | Character | Episodes |
|---|---|---|
| Andreas Schmidt-Schaller | Georg Bergelt | 11 |
| Adrian Topol | Maik | 6 |
| Masha Tokareva | Dr. Elena Kulikova | 4 |
| Adrian Topol | Maik Baumann | 2 |
| Florian Panzner | Thomas Majewski | 1 |
| Nico Liersch | Timo Barthel | 1 |
| Luc Feit | Oberstaatsanwalt Osthof | 1 |
| Jonas Laux | Gregor Uhlig | 1 |
| Sophie von Kessel | Prof. Dr. Sybille Köhler | 1 |
| Katja Studt | Carmen Weißflog | 1 |
| Fabian Busch | Jens Müller | 1 |
| Maria Simon | Tanja Rossner | 1 |
| David C. Bunners | Knut Erichsen | 1 |
| Bernd Michael Lade | Harry Drechsel | 1 |
| Winnie Böwe | Nadine Haberkorn | 1 |
| Florian Lukas | Peter Klamroth | 1 |
| Ivan Shvedoff | Dr. Steffens | 1 |
| Alexander Hörbe | Manfred Schüppel | 1 |
| Arnd Klawitter | Dr. Winkler | 1 |
| Stephan Luca | Ralf Adam | 1 |
| Joachim Król | Dr. Lothar Uhlig | 1 |
| Matthias Freihof | Heiner Schüppel | 1 |
| Andrea Osvárt | Agnes Huber | 1 |
| Esther Zimmering | Heidi Köhler | 1 |
| Uwe Preuss | Karl Scheibner | 1 |
| Horst Kotterba | Christian Auerswald | 1 |
| Götz Schubert | Ralph Ott | 1 |
| Thomas Sarbacher | Arnold Huber | 1 |