Guest Stars Rolf Kanies as Stefan Tremmel Haley Louise Jones as Kirsten Maybach Annika Ernst as Elena Lange Paul Bohse as Leon Lange Yung Ngo as Dr. Lee Kwon Angela Roy as Prof. Constanze Winterberg Jesse Albert as Andreas Jana Schölermann as Tatjana Schmaltz Steffen Groth as Adrian Schmaltz Sabine Vitua as Anna Zempel Tom Gerhardt as Winfried Treptekes
