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 Jesse Albert as Andreas Sandra Borgmann as Prof. Birgit Wittemann Patrick Bach as Harry Flöter Oliver Bootz as Prof. Peter Schweizer
