| Name | Character | Episodes |
|---|---|---|
| Gesine Cukrowski | Judith Sommer | 73 |
| Ulrich Mühe | Robert Kolmaar | 73 |
| Dieter Mann | Professor Bondzio | 73 |
| Leonard Lansink | Harald Sänger | 11 |
| Julia Jäger | Leilah Berg | 4 |
| Daniel Krauss | Etzel Hanisch | 4 |
| Antonio Wannek | Philipp Haarloff | 4 |
| Konstanze Breitebner | Irina von Levetzow | 4 |
| Dominique Horwitz | Jockel Löw | 3 |
| Roland Schäfer | Fritz Löscher | 3 |
| Lavinia Wilson | Nadja Heron | 2 |
| Niels-Bruno Schmidt | Mense Peiper | 2 |
| Christoph Waltz | Martin York | 1 |
| Mina Tander | 1 | |
| Lavinia Wilson | 1 | |
| Martin Umbach | Carl Zemm | 1 |
| Robert Stadlober | Felix Deven | 1 |
| Jophi Ries | Jürgen Hagen | 1 |
| Jophi Ries | 1 | |
| Lisa Kreuzer | Almut Ohm | 1 |
| Gerhard Olschewski | Wilhelm Prell | 1 |
| Tom Beck | Lennard von Stoiben | 1 |
| Hanns Zischler | Wolf Zöllner | 1 |
| Hanns Zischler | Arthur Pollack | 1 |
| Andrea Sawatzki | Patricia Marr | 1 |
| Andrea Sawatzki | Wanda Nissen | 1 |
| Dirk Martens | Jasper Röder | 1 |
| Dirk Martens | Florian Vacka | 1 |
| Jan-Gregor Kremp | Hagen Koerner | 1 |
| Rolf Hoppe | Josef Karzmann | 1 |
| Sebastian Koch | Tim Guddenberg | 1 |
| Roman Knižka | Peter Stiller | 1 |
| Christian Berkel | Hans Leinen | 1 |
| Christian Berkel | Helmut Gittel | 1 |
| Leslie Malton | Nadja Fänger | 1 |
| Gerd Baltus | Karl Wilk | 1 |
| Luc Feit | 1 | |
| Claudia Michelsen | Jehle Rehm | 1 |
| Rosel Zech | Waltraud Schrader | 1 |
| Jorres Risse | Security Guard | 1 |
| Corinna Harfouch | Malia Reh | 1 |
| Karin Baal | Ilse Farnung | 1 |
| Anian Zollner | 1 | |
| Thure Riefenstein | Helmuth Collin | 1 |
| Anna Fischer | Charlotte Hingsen | 1 |
| Hans Peter Hallwachs | Guntram Becker | 1 |
| Hary Prinz | Martin Ripkin | 1 |
| Herbert Knaup | Alex Leidhoff | 1 |
| Herbert Knaup | Karl Kromberg | 1 |
| Michael König | Hans Rozin | 1 |
| Dietrich Mattausch | Jürgen Keilmann | 1 |
| August Zirner | Dr. Nadolny | 1 |
| Jennifer Nitsch | Ellen Holm | 1 |
| Nicolette Krebitz | Katja Fonteyn | 1 |
| Nicole Heesters | Catharina Lemmen | 1 |
| Ludwig Trepte | Sezen Aksul | 1 |
| Ernst Stötzner | Jobst Melker | 1 |
| Florian Bartholomäi | Florian Behring | 1 |
| Günther Maria Halmer | Herbert Seidel | 1 |
| Cordula Trantow | Kreszenz Lederle | 1 |
| Hellmuth Karasek | Interviewer | 1 |
| Johanna Klante | Tina Polonsky | 1 |
| Oliver Bröcker | Jockel Graf | 1 |
| Sophie von Kessel | Anette Gotta | 1 |
| Pasquale Aleardi | 1 | |
| Eleonore Weisgerber | Miriam Ansbach | 1 |
| Katja Studt | Ildiko von Thüren | 1 |
| Marie Bäumer | 1 | |
| Marie Bäumer | Johanna Sidor | 1 |
| Natalia Wörner | Tanja Wrobels | 1 |
| Natalia Wörner | Julia Wander | 1 |
| Rufus Beck | Tom Burkhardt | 1 |
| Milena Dreißig | Conny Langenbach | 1 |
| Angela Roy | Johanna Polonsky | 1 |
| David C. Bunners | Konrad Guba | 1 |
| Gregor Bloéb | Peter Ruben | 1 |
| Hartmut Becker | Hans Ohnlaut | 1 |
| Philipp Moog | Bernhard Faber | 1 |
| Vadim Glowna | Norbert van Husen | 1 |
| Vadim Glowna | Thomas Irion | 1 |
| László I. Kish | Peter Lawin | 1 |
| Daniel Morgenroth | Herbert Axer | 1 |
| Daniel Morgenroth | Ikke Huber | 1 |
| Axel Milberg | Walter Kerkhoff | 1 |
| Thomas Heinze | Ernst Loy | 1 |
| Thomas Arnold | Nils Fugmann | 1 |
| Michael Gwisdek | Daniel Uberoi | 1 |
| Peter Sattmann | Franz Josef Zeuner | 1 |
| Bernd Michael Lade | Thomas Pollack | 1 |
| Susanne Lothar | Karoline Krug | 1 |
| Susanne Lothar | Helena Usman | 1 |
| Susanne Lothar | Senta Zöllner | 1 |
| Catherine Flemming | Fanny Eiswald | 1 |
| Mark Waschke | Police Officer | 1 |
| Udo Schenk | Walter Pfahler | 1 |
| Udo Schenk | Max Danner | 1 |
| Gudrun Landgrebe | Margit Matthae | 1 |
| Walfriede Schmitt | Ms. Kluge | 1 |
| Olivia Pascal | Friederike Neff | 1 |
| Alexander Beyer | Janitor | 1 |
| Walter Kreye | Günther Nichols | 1 |
| Walter Kreye | Walter Klock | 1 |
| Walter Kreye | Wim Geddes | 1 |
| Tobias Schenke | Ron Fugmann | 1 |
| Michael Hinz | Hermann Beil | 1 |
| Julia Richter | Katja Becker | 1 |
| Manfred Zapatka | Walter Seume | 1 |
| Christoph M. Ohrt | Michael Elsner | 1 |
| Katharina Müller-Elmau | Kirsten Vossberg | 1 |
| Sabine Vitua | Gabriele Wied | 1 |
| Torben Liebrecht | Security Agent | 1 |
| Catrin Striebeck | Ann Jankel | 1 |
| Volker Michalowski | 1 | |
| Julia Brendler | Rita Bonewa | 1 |
| Helmut Griem | Karl Axer | 1 |
| Hans Martin Stier | 1 | |
| Sabine Postel | Margit Vöge | 1 |
| Christine Schorn | 1 | |
| Rüdiger Vogler | Helmut Klix | 1 |
| Andreas Schmidt-Schaller | Peter Eisenberg | 1 |
| Rita Russek | Laura Seidel / Eva Hansen | 1 |
| Margarita Broich | Ann Gehlsen | 1 |
| Luise Helm | Sonja Polaczky | 1 |
| Anne Kasprik | Hanna Waller | 1 |
| Heio von Stetten | Reinhardt Staufenfels | 1 |
| Tatjana Blacher | Asja Koppeck | 1 |
| Tatjana Blacher | Axa Forbach | 1 |
| Christian Näthe | Mitko Goff | 1 |
| Frank Röth | Herbert Brehmer | 1 |
| Manfred Lehmann | Jakob Fänger | 1 |
| Max Tidof | Alexander Gramann | 1 |
| Stefan Reck | Steffan Berg | 1 |
| Wolf-Dietrich Sprenger | Hans Polonsky | 1 |
| Wolfram Koch | Roman Herbst | 1 |
| Renate Krößner | Emma Kolbe | 1 |
| Frank Giering | Helmut Kluge | 1 |
| Gennadi Vengerov | Boris | 1 |
| Herbert Fritsch | Arthur Rix | 1 |
| Iris Böhm | Ursula Bloch | 1 |
| Nina Franoszek | Carla Burckhardt | 1 |
| Mathias Herrmann | Werner Hirsch | 1 |
| Marita Marschall | Jeannine Deven | 1 |
| Siemen Rühaak | Torsten Kraft | 1 |
| Hans-Michael Rehberg | Werner Brodek | 1 |
| Hansa Czypionka | Richard Mohn | 1 |
| Hansa Czypionka | Hermann Wade | 1 |
| Sibylle Canonica | Waki Gittel | 1 |
| Max Volkert Martens | Hermann Waller | 1 |
| Steffen Münster | Wolfgang Fellbrich | 1 |
| Carola Regnier | Edelgard Rettich | 1 |
| Regine Zimmermann | Karen | 1 |
| Eva Ebner | Karin's Neighbour | 1 |
| Martin Goeres | Christian Brendenal | 1 |
| Esther Zimmering | Miriam | 1 |
| Emilio De Marchi | 1 | |
| Benedict Freitag | Wolfram Brandes | 1 |
| Christian Blümel | 1 | |
| Tobias Langhoff | Wolf Buddenberg | 1 |
| Heike Thiem-Schneider | Ingrid Jank | 1 |
| Waléra Kanischtscheff | Leonid Wagusin | 1 |
| Neithardt Riedel | Hilmar Vossberg | 1 |
| Ingeborg Westphal | Anna's Teacher | 1 |
| Christoph Bantzer | Ernst Meiborg | 1 |
| Stefan Jürgens | Heiner Wander | 1 |
| Jürgen Hentsch | Jürgen Fugmann | 1 |
| Timothy Peach | Ludger Seiters | 1 |
| Timothy Peach | Dr. Schramm | 1 |
| Dörte Lyssewski | Lydia Melker | 1 |
| Nikolaus Dutsch | Custodial Judge | 1 |
| Tim Morten Uhlenbrock | Tobias Gramann | 1 |
| Tim Morten Uhlenbrock | Tim Fallstein | 1 |
| Gerda Gmelin | Eva Sonnenberg | 1 |
| Heikko Deutschmann | René Lister | 1 |
| Laura Tonke | Anette Albrecht | 1 |
| Lambert Hamel | Hilbert Verringer | 1 |
| Michael Gerber | Professor Tucher | 1 |
| Götz Schubert | Bernd Mettig | 1 |
| Götz Schubert | Kurt Darboven | 1 |
| Günter Junghans | 1 | |
| Jan Niklas | Walter Deven | 1 |
| Stefan Kurt | Albert Geff | 1 |
| Bodo Wolf | Niels Braasch | 1 |
| Horst Kummeth | Andreas Brendenal | 1 |
| Holger Kunkel | Dirk Bachner | 1 |
| Thomas Sarbacher | Michael Lambert | 1 |
| Thomas Sarbacher | Hans-Jörg Christ | 1 |
| Jeroen Willems | Georg Aigner | 1 |
| Christian Schmidt | Gören Adams | 1 |
| Christine Neubauer | Anneke Brendenal | 1 |
| Gerhard Haase-Hindenberg | Walter Mohr | 1 |
| Tina Engel | Johanna Ägidi | 1 |
| Thomas Huber | Jan Burscheit | 1 |
| Peter Fitz | Karl Riemeister | 1 |
| Bernd Stegemann | Klaus Stibi | 1 |
| Jochen Kolenda | Wolfgang Gutmann | 1 |
| Michael Schönborn | 1 | |
| Susanne Sachße | Annett York | 1 |
| Oliver Stritzel | Georg Dopfer | 1 |
| Juliane Köhler | Marlene Gramann | 1 |
| Jaecki Schwarz | Eugen Fiedler | 1 |