| Name | Character | Episodes |
|---|---|---|
| Rudolf Kowalski | Kriminalhauptkommissar Martin Stolberg | 50 |
| Victoria Mayer | Kriminaloberkommissarin Sofia Lechner | 22 |
| Wanja Mues | Kriminaloberkommissar Nico Schreiber | 20 |
| Christoph Waltz | Paul Büttner | 1 |
| Lavinia Wilson | Teresa Korff | 1 |
| Jannis Niewöhner | Leon Kroll | 1 |
| Louis Hofmann | Dennis Kessler | 1 |
| Katharina Nesytowa | Dana | 1 |
| Dietmar Mues | Heiner Fromme | 1 |
| Michael Roll | Theo Eberstein | 1 |
| Michael Roll | Jan Marek | 1 |
| Adrian Topol | Ralf Gössner | 1 |
| Birge Schade | Anne Reger | 1 |
| Birge Schade | Annette Frisch | 1 |
| Tonio Arango | Dr. Frank Singer | 1 |
| Hannes Hellmann | Rafael Mosco | 1 |
| Devid Striesow | Kalle Mosco | 1 |
| Hanns Zischler | Gerhard Mohr | 1 |
| Jella Haase | Angela Vessel | 1 |
| Dirk Martens | Michael Büntig | 1 |
| Kirsten Block | Renate Grandis | 1 |
| Hanna Schygulla | Marita Dennett | 1 |
| Florian Panzner | Rajko Cranz | 1 |
| Godehard Giese | Gary Franke | 1 |
| Martin Brambach | Chris Vessel | 1 |
| Denis Moschitto | Tommy König | 1 |
| Liv Lisa Fries | Inga Marks | 1 |
| Walter Sittler | Gerd Schober | 1 |
| Ulrich Noethen | Ralf Reger | 1 |
| Alice Dwyer | Mia Keller | 1 |
| Alice Dwyer | Evelyn Waldow | 1 |
| Désirée Nosbusch | Monika Willmann | 1 |
| Hans Peter Hallwachs | Arthur Bülow | 1 |
| Wilma Elles | Petra Schnuck | 1 |
| Maria Ehrich | Selina | 1 |
| Alexander Held | Dr. Uwe Falk | 1 |
| Alexander Held | Dr. Klaus Reinhardt | 1 |
| Nikolai Kinski | Benjamin Becker | 1 |
| Herbert Knaup | Carl Reese | 1 |
| Suzanne von Borsody | Ruth Habermann | 1 |
| Lenn Kudrjawizki | Philip Schröder | 1 |
| Erdal Yıldız | Luka Dvor | 1 |
| Erdal Yıldız | Hamid Beitullah | 1 |
| Christina Plate | Amanda Beck | 1 |
| Oliver Stokowski | Jürgen Eck | 1 |
| Oliver Stokowski | Armin Trenck | 1 |
| Florian Bartholomäi | Torben Lemmer | 1 |
| Oliver Bröcker | Benedikt Frank | 1 |
| Dominic Raacke | Klaus Albert Stahn | 1 |
| Kai Wiesinger | Christoph Katzmann | 1 |
| Sunnyi Melles | Yvonne Beck | 1 |
| Barnaby Metschurat | Uli Hüttner | 1 |
| Andreas Schmidt | Stefan 'Spickey' Vogt | 1 |
| Lucas Gregorowicz | Olaf Kaminski | 1 |
| Angela Roy | Dagmar Palmieri | 1 |
| Janna Striebeck | Uta Schmidt | 1 |
| Franziska Walser | Iris Pietschmann | 1 |
| Axel Milberg | Justus Veerkamp | 1 |
| Jan Henrik Stahlberg | Andreas Bendler | 1 |
| Antonio Wannek | Enno Meier | 1 |
| Katharina Böhm | Dr. Maren Röber | 1 |
| Peter Sattmann | Gert Nowak | 1 |
| Peter Lohmeyer | Dieter Kresnik | 1 |
| Susanne Lothar | Regina Bülow | 1 |
| Katharina Schüttler | Yvonne Reese | 1 |
| Catherine Flemming | Anne Sartorius | 1 |
| Marion Kracht | Peggy Kehlmann | 1 |
| Mark Waschke | Thomas Frisch | 1 |
| Tilo Prückner | Helmut Schnur | 1 |
| Tilo Prückner | Graf Frankenberg | 1 |
| Susanna Simon | Simone Beck | 1 |
| Ulrike Kriener | Ira Kreil | 1 |
| Harald Schrott | Frank Voß | 1 |
| Thomas Limpinsel | Dr. Ulrich Jansen | 1 |
| Cosma Shiva Hagen | Monica Savino | 1 |
| André Hennicke | Steffen Sonnenburg | 1 |
| André Hennicke | Sebastian Thieme | 1 |
| Olivia Pascal | Lucia Silber | 1 |
| Pit Bukowski | David Rahn | 1 |
| Hannah Herzsprung | Martina Diehl | 1 |
| Nadja Bobyleva | Britta Hansen | 1 |
| Nadja Bobyleva | Alina | 1 |
| Marleen Lohse | Verena Lang | 1 |
| Melika Foroutan | Ulrike Schober | 1 |
| Geno Lechner | Jule Katzmann | 1 |
| Branko Samarovski | Prof. Habermann | 1 |
| Michael Brandner | Horst Hansen | 1 |
| Anna Thalbach | Dr. Claudia Berger | 1 |
| Christoph M. Ohrt | Manfred Herwig | 1 |
| Constantin von Jascheroff | Daniel Wilde | 1 |
| Jürgen Tonkel | Polizeihauptmeister Achim Lorentz | 1 |
| Ivan Shvedoff | Oleg Tarrassow | 1 |
| Alexander Hörbe | Mathias Grothe | 1 |
| Torben Liebrecht | Ingo Schober | 1 |
| Catrin Striebeck | Maren Kohlmann | 1 |
| Marie Zielcke | Jana Gutsch | 1 |
| Robert Hunger-Bühler | Armin Weisse | 1 |
| Jennifer Ulrich | Alissa Eberstein | 1 |
| Margarita Broich | Paula | 1 |
| Nina Fog | Yumiko Sekiya | 1 |
| Luise Helm | Chiara Palmieri | 1 |
| Marek Harloff | Sebastian Kleinfeld | 1 |
| Nilam Farooq | Dilara Erkal | 1 |
| Stefan Gebelhoff | Nico Häffner | 1 |
| Christian Näthe | Matthias Zach | 1 |
| Stephan Kampwirth | Peter Sobeck | 1 |
| Wolf-Dietrich Sprenger | Christian Ziemann | 1 |
| Jenny Schily | Hella Linekens | 1 |
| Renate Krößner | Anna Gruber | 1 |
| Andreas Leupold | Martin Gruber | 1 |
| André Jung | Prof. Dr. Werner | 1 |
| Manuel Cortez | Sami 'Sam' Erkal | 1 |
| Jale Arıkan | Monika Strecker | 1 |
| Marita Marschall | Fabienne Brodersen | 1 |
| Tom Gramenz | Lukas Trenck | 1 |
| Hanno Friedrich | Vater Langhof | 1 |
| Karina Plachetka | Claudia Sundberg | 1 |
| Hansa Czypionka | Ulf Hakens | 1 |
| Timo Dierkes | Günther Pilzner | 1 |
| Sibylle Canonica | Elena Wagner | 1 |
| Heike Trinker | Elsie Schmolek | 1 |
| Heike Trinker | Gitte Wilde | 1 |
| Tobias Oertel | Christian Torner | 1 |
| Rahul Chakraborty | Bülent Öktem | 1 |
| Dirk Borchardt | Michael Lensky | 1 |
| Robert Gwisdek | Sebastian Werner | 1 |
| Hendrik Arnst | Wolfgang Pütz | 1 |
| Gerdy Zint | Michael Rupp | 1 |
| Lea Mornar | Elisabeth Czerny | 1 |
| Max Felder | Peer Katzmann | 1 |
| Sergej Moya | Marcel Kaminski | 1 |
| Michael Lott | Guido Hahn | 1 |
| Laura Tonke | Susan Schumann | 1 |
| Alissa Jung | Patricia Lukas | 1 |
| Frederick Lau | Sebastian Stern | 1 |
| Rainer Sellien | David Lemberger | 1 |
| Wolfgang Pregler | Frank Kehlmann | 1 |
| Maximilian Simonischek | Giorgio Savino | 1 |
| Simon Schwarz | Michael Kolmer | 1 |
| Michaela May | Marleen Weisse | 1 |
| Krystian Martinek | Ulrich Gehrmann | 1 |
| Matthias Koeberlin | Dirk Schober | 1 |
| Thomas Sarbacher | Marcello Savino | 1 |
| Mario Irrek | Jens Kleinschmidt | 1 |
| Johanna Gastdorf | Desirée Matthau | 1 |
| Bernd Stegemann | Peter Wilde | 1 |
| Matthias Brandt | Viktor Seegers | 1 |
| Sven Pippig | Carlo Sicke | 1 |
| Carlo Ljubek | Alexander Weissner | 1 |
| Gitta Schweighöfer | Frau Schrep | 1 |
| Anna Hilgedieck | Klara | 1 |
| Axel Prahl | Raimund Görlitz | 1 |