Hallgrim and Marie attend a conference in Sweden where they locate the person behind the Lithuanian sex trade. A price is put on Hallgrim's head, and someone comes to collect.

After hovering between life and death, Hallgrim survives a knife attack. He and the team must now locate the perpetrator who is fighting to control the Balkan drug trade into Scandinavia.

After Fabio kills Le Mabé with an injection of nerve gas, Hallgrim learns about some incriminating photos. Michael finds an internal leak and Hallgrim decides to lay a false trail. And, Marie finds out that Hallgrim slept with the Swedish flight attendant.

Curly, the mole in the squad, leads the team to ponder what Aagaard's latest development in Congo, a field hospital, really is? Could it be a cover-up for a facility to install a rebel leader, who would grant him mining concessions to the element tantalum.