Guest Stars Rolf Kanies as Stefan Tremmel Annika Ernst as Elena Lange Haley Louise Jones as Kirsten Maybach Paul Bohse as Leon Lange Yung Ngo as Dr. Lee Kwon Angela Roy as Prof. Constanze Winterberg Laura Berlin as Julia Weigert Jesse Albert as Andreas Reiner Schöne as Prof. Dr. Stefan Jäger Wayne Carpendale as Nic Beuser Jennifer Poppek as Sabine Steenken Stefan Gebelhoff as Ernst Velten Hendrik von Bültzingslöwen as Zoran König Hansa Czypionka as Thomas Wittek Christoph Bautz as Polizeikommissar Manfred
