| Name | Character | Episodes |
|---|---|---|
| Timo Dierkes | Detlev Grün | 108 |
| Martin Armknecht | Anwalt Teppenborn | 3 |
| Joe Bausch | Killer | 3 |
| Cristina do Rego | Lena Herzog | 2 |
| Katy Karrenbauer | Doris Kloppke | 2 |
| Michael Grimm | Brötchen Edi | 2 |
| Gotthard Lange | Oberstaatsanwalt Böger | 2 |
| Martin Umbach | Harry | 1 |
| Katharina Nesytowa | Natalia Sokolow | 1 |
| Michael Roll | Alfred Königstein | 1 |
| Hannes Hellmann | Lutz Büttge | 1 |
| John Friedmann | Gilberto | 1 |
| Florian Fitz | Dr. Markus Paul | 1 |
| Dirk Martens | Wolf Steinke | 1 |
| Svenja Jung | 1 | |
| Svenja Jung | Mandy | 1 |
| Martin Gruber | Gero Meinerzhagen | 1 |
| David Bredin | Matze Krüger | 1 |
| Mark Zak | Igor | 1 |
| Isabel Bongard | Alina | 1 |
| Stephan Benson | Hartmann | 1 |
| Hans Peter Hallwachs | Erich Kisters | 1 |
| Sönke Möhring | Torsten Frey | 1 |
| Julia Jäger | Yvonne Hillesheim | 1 |
| Aljoscha Stadelmann | Jochen Müller | 1 |
| Lenn Kudrjawizki | Marek | 1 |
| Marc Rissmann | Raimund Künast | 1 |
| Barbara Philipp | Vera Hinze | 1 |
| Elena Uhlig | Britta Schäfer | 1 |
| Florian Bartholomäi | Sven | 1 |
| Doris Kunstmann | Lene Dallach | 1 |
| Oliver Bröcker | Andi Wolters | 1 |
| Rolf Kanies | Richter Decker | 1 |
| Katja Studt | Claudia Meisner | 1 |
| Mai Duong Kieu | Kim | 1 |
| Pit Bukowski | Pete Widdig | 1 |
| Jürgen Rißmann | Ernst Sawitzki | 1 |
| Alexander Schubert | Dr. Jochen Seligmann | 1 |
| Armin Dillenberger | Heiko Sikora | 1 |
| Steffen Jürgens | Uwe Zeckowski | 1 |
| Dietrich Hollinderbäumer | Hans Domscheidt | 1 |
| Lilia Lehner | Carolin Stammheimer | 1 |
| Ercan Durmaz | Viktor Harms | 1 |
| Gode Benedix | Michael 'Mike' Haschek | 1 |
| Xenia Assenza | Elif Özer | 1 |
| Mimi Fiedler | Franziska Lagura | 1 |
| Antonio Wannek | Axel Beckmann | 1 |
| Thomas Arnold | Kai Fürst | 1 |
| Bernd Michael Lade | Seelsorger Kohnert | 1 |
| Winnie Böwe | Zoé Knaup | 1 |
| Milton Welsh | Erik Shadow | 1 |
| Petra Zieser | Luise Krugbaumer | 1 |
| Catherine Flemming | Conny Unterberg | 1 |
| Tilo Prückner | Heinz Ritter | 1 |
| Thomas Limpinsel | Günter Rositzki | 1 |
| Knut Berger | Günther Lawniczak | 1 |
| Jochen Nickel | Joachim Pöls | 1 |
| Alexander Beyer | Toto Emmerling | 1 |
| Ludger Pistor | Prof. Erik Thalberg | 1 |
| Rebecca Immanuel | Martina Walden | 1 |
| Michael Brandner | Manni Gießen | 1 |
| Julia Richter | Miriam Karlsen | 1 |
| David Rott | Yannik | 1 |
| Brigitte Grothum | Agathe Kisters | 1 |
| Alexander Hörbe | Ulf Hund | 1 |
| Martin Rapold | Rolf Licht | 1 |
| Volker Michalowski | Manni | 1 |
| Julia Brendler | Ute Schmidt | 1 |
| Norbert Heisterkamp | 1 | |
| Hans Martin Stier | Dieter Kehlmann | 1 |
| Erol Afşin | Haias Al-Omar | 1 |
| Uwe Rohde | Manfred Sievers | 1 |
| Ronald Kukulies | Matze Hellwig | 1 |
| Patrick Rapold | Ralf Licht | 1 |
| Lars Pape | Tobias Weiss | 1 |
| Stefan Gebelhoff | Justus Schiller | 1 |
| Simonetta Solder | Sofia Cassano | 1 |
| Tom Hoßbach | Marius Preuss | 1 |
| Philippe Brenninkmeyer | Jürgen Boll | 1 |
| Renate Krößner | Rita Wao | 1 |
| Cosima Lehninger | Susanne Potrowka | 1 |
| Hildegard Schroedter | Simone Milowski | 1 |
| Ben Bela Böhm | Benedikt Brunner | 1 |
| Kai Maertens | Wild Willy Wilke | 1 |
| Kai Maertens | Willy Wilke | 1 |
| Piet Fuchs | 1 | |
| Dieter Landuris | Henner Bocht | 1 |
| Max Befort | Jonas Becker | 1 |
| Christian Kahrmann | 1 | |
| Hanno Friedrich | Lars Janssen | 1 |
| Friederike Linke | Nadja Liebknecht | 1 |
| Jochen Horst | Martin Walden | 1 |
| Siemen Rühaak | Prof. Weingarten | 1 |
| Hansa Czypionka | Magnus Winschewski | 1 |
| Jana Klinge | Dr.Rosen | 1 |
| Klaus Zmorek | Walther Gottlieb | 1 |
| Anna von Haebler | Silke Krauss | 1 |
| Joyce Ilg | Pia Krattwinkel | 1 |
| Steffen Münster | Prof. Habakuk | 1 |
| Alexandra Finder | Katrin Schneider | 1 |
| Klaus Nierhoff | Gerd Schäfer | 1 |
| Heike Trinker | Mariella Reinhardt | 1 |
| Kerem Can | Erol Yildiz | 1 |
| Marko Dyrlich | Guido Prowaznik | 1 |
| Timo Jacobs | Oliver Dominic | 1 |
| Maike Jüttendonk | Meike Behling | 1 |
| Benedikt Blašković | Vincent | 1 |
| Dirk Borchardt | Klaus Starcke | 1 |
| Patrick von Blume | Jörg Kabel | 1 |
| Michael Che Koch | 1 | |
| Daniel Fritz | Marvin Röschhoff | 1 |
| Denis Schmidt | Harry Meyer | 1 |
| Jean-Luc Bubert | Felix Osterloh | 1 |
| Daniele Rizzo | Luca Limoni | 1 |
| Uwe Fellensiek | Rollo Dombrowski | 1 |
| Cornelia Ivancan | Elke Palass | 1 |
| Wolfgang Packhäuser | Schmittke | 1 |
| Guido Broscheit | Michael Bollmann | 1 |
| Jörg Malchow | Max Bahrein | 1 |
| Patricia Meeden | Estefania Rocca | 1 |
| Patricia Meeden | Estefania | 1 |
| Guntbert Warns | Dr. Specht | 1 |
| Michael Lott | Axel Stoller | 1 |
| Heikko Deutschmann | Michael Ramme | 1 |
| Nadeshda Brennicke | Judith Grauer | 1 |
| Henning Peker | Karl Bukowski | 1 |
| Anna Böger | Monika Hamm | 1 |
| Gisela Keiner | Gerlinde Kiesewetter | 1 |
| Andreas Guenther | Sebastian Borchert | 1 |
| Volker Lechtenbrink | Maximilian Baron von Protznitz | 1 |
| Jan Pohl | Moritz Hackforth | 1 |
| Wolfgang Müller | Heiner Hansen | 1 |
| Gotthard Lange | Martin Böger | 1 |
| Johanna Gastdorf | Mathilda Großkreutzer | 1 |
| Boris Aljinovic | Andreas Dorn | 1 |
| Bruno Cathomas | Dieter Brandt | 1 |
| Luca Maric | Tinte | 1 |
| Tim Wilde | Markus Müller | 1 |
| Robert Schupp | Mark Groller | 1 |