Maren Hilbert is the new teacher at the private elite school Sophienbund. She soon realizes that the school, which looks so perfect on the outside, is in a pretty bad state on the inside. When a killing spree is announced, Maren knows she has to act. But neither the principal nor her colleagues take the threatening emails or Maren seriously, only police officer Niklas Götz (39), the father of one of her pupils, supports her in her research. Maren is certain: the potential killer is a boy from her class and he is serious. A race against time begins.
| Actor | Role |
|---|---|
 Anja KlingMaren Hilbert | Maren Hilbert |
 Proschat MadaniSilvia Oppermann | Silvia Oppermann |
 Thure RiefensteinNiklas Götz | Niklas Götz |
 Emil ReinkeJonas Götz | Jonas Götz |
 Heike JoncaSonja Kahlers | Sonja Kahlers |
 Silke MatthiasPetra Burkert | Petra Burkert |
 Uwe PreussMarens Kollege | Marens Kollege |
 Sabrina RatteyReporterin | Reporterin |
| MMarc BarthelSchüler | Schüler |
| AAnnette BlumMutter4 | Mutter4 |
 Thomas SchendelAdrian Pagel | Adrian Pagel |
 Marie-Christine FriedrichSchulsekretärin | Schulsekretärin |
 Heidrun BartholomäusPatricks Mutter | Patricks Mutter |
| SSimone BurckhardtNina Meyers | Nina Meyers |
 Amy MußulSchülerin Antonia | Schülerin Antonia |
 Anita VulesicaHanna | Hanna |
| AAnna Juliana JaennerSchülerin | Schülerin |
 Leonie KrahlSchülerin Emilie | Schülerin Emilie |