- Timon Wloka
- Â Ben Brehmer 26 episodes, 2010-2012
- Janina Fautz
- Â Leonora 'Leo' Largareta 26 episodes, 2010-2012
- Timmi Trinks
-  Jonas Stürmer 26 episodes, 2010-2012
- Ugur Ekeroglu
-  Ãzgür 'Ãzzi' Delikaya 26 episodes, 2010-2012
- Ruby O. Fee
- Â Sophie Kellermann 26 episodes, 2010-2012
- Peter Lohmeyer
- Â Prof. Michael Brehmer / ... 26 episodes, 2010-2012
- Eralp Uzun
- Â Cenk Delikaya 26 episodes, 2010-2012
- Sascha Chmelensky
- Â Lennart 'Lenny' Merz 24 episodes, 2010-2012
- Alexandra Weis
- Â Miri 24 episodes, 2010-2012
- Shalin-Tanita Rogall
- Â Jacqueline 'Jacky' Fritsche 24 episodes, 2010-2012
- Alwara Höfels
- Â Tanja Greve 23 episodes, 2010-2012
- Denis Moschitto
- Â Harald Jakobs 23 episodes, 2010-2012
- Tim Wilde
- Â Max Forck 13 episodes, 2010
- Oliver Wnuk
- Â Rocky 13 episodes, 2010
- Conrad F. Geier
- Â Paul 13 episodes, 2010
- Emily Behr
- Â Bianca 13 episodes, 2010
- Henrik Zimmermann
- Â Jan 13 episodes, 2010
- Dorian Brunz
- Â Tobias 13 episodes, 2010
- Jan Jakob Müller
- Â Basti 13 episodes, 2010
- Stefan Dietrich
- Â Piet 13 episodes, 2010
- Nicolaj Grin
- Â Carlos 13 episodes, 2010
- Nenad Lucic
- Â Bodo 13 episodes, 2010
- Thomas Arnold
- Â Boris 12 episodes, 2011-2012
- Paul MaaÃ
-  Götz 12 episodes, 2011-2012
- Moritz Gaa
- Â Julio 11 episodes, 2011-2012
- Augustin Kramann
- Â Thomas Kern 11 episodes, 2010
- Timur Isik
- Â Vadim 11 episodes, 2011-2012
- Mirko Lang
- Â Tom 11 episodes, 2011-2012
- Anika Mauer
- Â Frau Kellermann 10 episodes, 2010
- Arnd Klawitter
- Â Lasinski 10 episodes, 2011-2012
- Bejean Banner
- Â Marvin 10 episodes, 2010-2012
- Richard Sammel
- Â Alexander Legard / ... 9 episodes, 2011-2012
- Ronald Kukulies
- Â Dorfpolizist HaJo 8 episodes, 2011-2012
- Veit Stübner
- Â Martin Vogt 8 episodes, 2011-2012
- Mickey Hardt
- Â Marius 7 episodes, 2011-2012
- Dietrich Hollinderbäumer
- Â Dr. Crohn 6 episodes, 2011
- Julia Jäger
- Â Elisabeth Genthin 6 episodes, 2011-2012
- Mohamed El-Asmer
- Â Murat 6 episodes, 2010
- Ralph Herforth
- Â Andreas Schier 5 episodes, 2010
- Lennardt Krüger
- Â Innenminister 5 episodes, 2012
- Hartmut Volle
- Â Laurenz Georgi 5 episodes, 2012
- Dirc Simpson
- Â Schneider 5 episodes, 2011-2012
- Suzan Anbeh
- Â Carla Brehmer 4 episodes, 2012
- Julika Jenkins
- Â Frau Dehning 4 episodes, 2010
- Peter Prager
- Â Frank Brandner 4 episodes, 2012
- Alexander Sternberg
- Â Wolters 4 episodes, 2011-2012
- Florian Martens
- Â Johann Bauer 3 episodes, 2010
- Lars Löllmann
- Â Agent 2 episodes, 2011-2012
- Philipp Mauritz
- Â Agent 2 episodes, 2011-2012
- Cyrus David
- Â Polizist 2 episodes, 2011-2012
- Armin Dillenberger
- Â Verkehrspolizist 2 episodes, 2011-2012
- Jasmin Mehling
- Â Polizistin 2 episodes, 2012
- Steffen Groth
- Â Wolf Weller 1 episode, 2011
- Henriette Gonnermann
-  Bundespräsidentin 1 episode, 2012
- Rainer Reiners
- Â Herr Wagner 1 episode, 2011
- Frank Streffing
- Â Herr Schulze 1 episode, 2011
- Frederik Funke
- Â Polizist 1 episode, 2012
- Hanne B. Wolharn
- Â Chorleiterin (uncredited) 1 episode, 2010
- Lynn Femme
- Â Laborassistentin (uncredited) 1 episode, 2011
- Mehmet Kucak
- Â Taxifahrer (uncredited) 1 episode, 2011