Luise Berg vows to put her daughter's murderer back behind bars.

Luise's erratic behavior raises questions; Dennis tries to befriend Josi.

Luise suspects that Dennis is systematically taking revenge on his former tormentors; there's another murder and Josi's world collapses when she realizes that her new boyfriend Luca isn't at all who he claims to be.

Luise's actions put her career in jeopardy; Dennis confronts Dr. Aschhausen.

Josi is blackmailed and must make a drastic decision.