Black Lake (Swedish: Svartsjön) is a Scandinavian thriller television series, devised by Ulf Kvensler and co-produced by TV3 Sverige, TV3 Danmark, TV3 Norge, Viaplay, and Jarowskij, that first broadcast in Sweden and Denmark in October 2016.

The first eight-part series, which also alludes to hints of the supernatural and horror genres, is based around a disused ski resort in the north of Sweden, and was written by Kvensler, Moa Herngren, Peter Arrhenius, and Jonathan Sjöberg, and directed by Sjöberg and David Berron.

The main characters were Filip Berg, returning from the first series, joined by Hedda Stiernstedt, Daniel Larsson, David Nzinga, Bahar Pars and Alida Morberg.

[4] The second series follows Johan (Berg) as he and five other participants take place in a rehabilitation programme on the island of Kallskär.

[6] Johan takes his brother and six friends to the north of Sweden because he is thinking of purchasing a disused ski hotel close to the border with Norway.

Johan's girlfriend, Hanne, who suffers long-term guilt over the death of her younger brother, quickly comes to believe that the building is possessed by the spirit of a dead child (a myling).

At the same time, the surly caretaker, Erkki, is trying to scare them away from the property, with assistance from two Norwegian brothers who run a nearby snowmobile business.

He tells her that he thinks Helgesen, the resort's previous owner, was not convinced he had done the killings despite confessing to the crime.

In the cellar, she finds a secret room that contains medical files, relating to an earlier period when the hotel was a sanatorium.

After returning to the hotel, Hanne notices that one of the child's drawings shows the bed in the cellar's secret room with a space underneath.