Guest Stars Catrin Striebeck as Sandra Jansen Franz Hagn as Leon Franke Jörg Pintsch as Thomas Franke Edin Hasanovic as Thorsten Siebert Aleksandar Jovanovic as Case Markus Gertken as Lorenz Luise Bähr as Jennifer Kaminski Denis Lyons as Jerome Vasquez Katrin Bauerfeind as Julia Gracht Bastian von Bömches as Manuel Borchert Lamou Vissay as Quang Peter Gilbert Cotton as Liam Stern Henning Peker as Homeless Man Megan Gay as Melissa Whitfield Ercan Karacay as Dr. Ardal Ünal Keiko Hara as Mrs. Wang Simon Werdells as Dennis Phone Provider Jens Grumwald as Security Phone Provider Ria Weber as Receptionist Phone Provider Nicola Schmid as Leader Support Group "Anxiety" Adam Venhaus as Captives Christele Filiho as Cleaning Lady Hospital Stefan Barthel as Contact Officer Nelly Wilson Gonzalez Ochsenknecht as Ijonomous Pascal Aubain Dassie Koungang as Bouncer Kryptoparty John Forster as Reporter House of Parliament