Carl Mørck is demoted to Department Q, the cold case unit, after a raid he instigated goes wrong.

His investigations suggest that the victim, a rising politician named Merete Lynnggard, was actually kidnapped.

Mørck ruffles feathers and is told to halt the investigation, but he and his assistant Assad persist.

[1] Carl and Assad locate the pressure chamber and rescue Lynnggard as she is about to die, and they arrest Lasse.

[2] The film topped the local box office in 2013 with 725,000 Danish moviegoers buying tickets.