Putting his partner's life over the arrest of Forsberg, Conley dives into the water and fights for Eklund's life. Asha, who has been arrested, is interrogated by Eklund and Conley. She finally caves in to Conley's interrogation and gives up her secret.

Conley has an epiphany. It dawns on him that the paintings he saw in Forsberg's apartment resemble the paintings found in Andrej's cabin. Forsberg has to be involved. Conley and Eklund find Forsberg's apartment deserted.

Investigating Sofia's murder, the team finds a rubber container stained with blood. Göran takes Hanna for a weekend in the countryside. Eklund and Conley interrogate Amir and finds out about Göran blackmailing him.

With his fake profile in the chatroom, Phille manages to lure L.H. in. The police find the dead body of a young woman named Sofia and her father points them in the direction of a refugee named Amir, who hosts private sex parties that Sofia had attended.

Phille and the team create an alter ego on the "Temptations" chatroom to lure L.H. to get in contact and divulge information. Awaiting a response, each of the team wrestles with their own demons.

A member of Eklund's team is murdered when a disgruntled ex-cop goes on a killing frenzy.

Conley and Eklund struggle with ghosts from their pasts; Frida continues with her deadly hunt.

Following their lead on the copycat killer, the team finds yet another connection to L.H. and the Temptations chatroom. Meanwhile L.H.'s mission to recruit Andrej continues. He receives a Russian passport and appears to be on his way to Stockholm.

With the help of a computer hacker, Conley and Ecklund try to merge the existing evidence. In the Deep Web they find a trace: someone with the initials LH who is apparently recruiting killers via the Web.

The team and the Stockholm PD are searching the hospital and surrounding area for the escapee dentist, whose shocking prophecy that there will be more victims torments Eklund and Conley. While the investigation continues, a new string of murders unfold.

Conley is dedicating every waking hour to keeping the killer from finding his victims. With Eklund's team of officers, he is shadowing the two main suspects, a professor and a dentist, both of whom have been in New York and Stockholm during the killings.

Over the past 16 months, young, blonde, blue-eyed women have been found dead and buried in a field of asphodels. Tracking the killer from New York to Stockholm, NYPD detective Conley is on a special dispensation to observe and advise the Stockholm PD.