Karlijn is confronted with her own past when she comes under increasing pressure to solve the mystery. There are new victims in Schouwendam, and the paranoia of the residents takes on dangerous forms. When something is found in the forest, it turns everything upside down.

Karlijn and the man who still thinks he is Olaf Witte reconstruct everything that happened in Poland. This yields a number of bewildering insights and conclusions that make the case take an unexpected turn. Back in Schouwendam, a mysterious phone call from Poland is investigated.