In an apartment in Oslo, a corpse in an advanced state of decomposition is discovered. The police investigation will reveal macabre findings: the victim turns out to be a grave robber who collected "trophies". And among them is the skull of Inspector Jouna Linn's dead wife. A few days later, a German policewoman asks for Jouna's help in solving a murder case in Rostock. And then what initially seemed like a crazy intuition becomes a terrifying certainty. The infamous serial killer Jurek Walter has returned. The inspector knows that he only has one thing left to do: protect his daughter at all costs. And he cannot rely on the help of his colleagues, because no one shares his paranoid theories. Who would be afraid of a ghost? But not everyone sees the same reality. When the dead return, some believe in miracles, some relive their worst nightmares.