The investigation comes to a head. Eliška is revealed, as is Marty's final message.

The mysterious Eliška has invaded the lives of Marty's friends, too, and is gradually setting them against one another.

The discovery of Marty's telephone could bring the breakthrough they've been hoping for. Marty's parents decide to go at it alone.

Marty was not the only victim. His father joins forces with Kryštof to track down the mysterious culprit.

A message from a classmate could be the key to the identity of an enigmatic extortionist. Martin's father has to catch him, whatever the cost, and so he takes matters firmly into his own hands.

Martin's father refuses to accept unanswered questions. When even the police can no longer help him, he starts his own investigation.

With each additional login to his son's computer, Marty's father uncovers the dreadful moments that a mysterious Eliška forced him to endure.

The tragic death of 15-year-old Martin, known as Marty, leads his grief-stricken father to the discovery of some horrific videos. What led his well-behaved son to make such depraved films?