Guest Stars Annika Ernst as Elena Lange Haley Louise Jones as Kirsten Maybach Rolf Kanies as Stefan Tremmel Paul Bohse as Leon Lange Yung Ngo as Dr. Lee Kwon Angela Roy as Prof. Constanze Winterberg Jesse Albert as Andreas Guido Broscheit as Prof. Christian Berkenbusch Penelope Frego as Giulia Casiraghi Maike Jüttendonk as Saskia Saalfeld Ole Dahl as Cedric Schubert Stefko Hanushevsky as Polizeioberkommissar Peter Thaler Thomas Jansen as Robert Zimmer Carolina Vera as Carla Ofenhitzer Ida Dommenget as Frida Marie Julie Bretschneider as Abiturientin
