Thomas Heinze

as Dr. Alonso

as Markus (4 episodes)

as Philipp von Baugenwitz

as Trevor Murphy

as Prof. Mark Reinhardt

as Thomas

as Thorben

as Holger Schmitz-Wessel

as Dominik Stötzer

as Maries Vater - Herr Grevenbroich

as Self (1 episode)

as Rolf Janssen

as Clark Grant

as Pfarrer Benedikt Hofmann

as Felix Montabaur Jr.

as Rainer Hübner

as Self (1 episode)

as Adam Krusenstern

as Professor Hagemeister (1 episode)

as Self (1 episode)

as Heinrich Schumacher

as Michael Wagner (1 episode)

as himself (1 episode)

as Self (2 episodes)