Guest Stars Haley Louise Jones as Kirsten Maybach Annika Ernst as Elena Lange 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 Steffen Groth as Adrian Schmaltz Sabine Vitua as Anna Zempel Tom Gerhardt as Winfried Treptekes Jana Schölermann as Tatjana Schmaltz
