Jonas Horak (played by Karl Markovics) is a protagonist in The Final Problem.
Freitag (played by Stefan Pohl) appears in The Final Problem.
Beate Riegler (played by Maria Fliri) appears in The Final Problem.
Karin Sessler (played by Sunnyi Melles) appears in The Final Problem.
Franz Riegler (played by Max Moor) appears in The Final Problem.
Sophie Landner (played by Julia Koch) appears in The Final Problem.
Albert Hefenstein (played by Haymon Maria Buttinger) appears in The Final Problem.
Fred Huber (played by Marc Hosemann) appears in The Final Problem.