Saga and Martin investigate the killing of the eco-terrorists and suspect there is a leader still alive who's been pulling the strings all along. Are there new attacks being planned? Are there more terrorist cells?
A key witness wakes up at the hospital but is suffering from amnesia. Meanwhile, four individuals wearing animal masks carry out a new attack and claim responsibility in an online video. Martin visits Jens again but this time exceeds his authority.
Martin is at the hospital with his son, Nikolaj, who has suddenly fallen ill. When Saga visits, she notices something is off about the place. The case intensifies with another poisoning and the recovery of a suspicious motorboat from the sea.
Saga and Martin re-interview witnesses and suspect someone within their own group has been doctoring their reports, but need to make sure. Laura finally manages to help piece together a composite sketch of the perpetrator.