A far-right party holds an election vigil on the Copenhagen boat. When a bomb is discovered on board, Harrbjørn has to be brought in.

When PST's secrets are leaked, a mole is suspected on the inside. Harrbjørn must solve the case, but can't trust anyone.

An Iranian delegation is in Norway, and an assassination attempt is imminent. At the same time, Harrbjørn becomes embroiled in a relationship that could be his most dangerous yet.