Watch on Soap2day. Go behind the scenes of the TV series *Svärtan*. It follows a group of young people who discover an injured mermaid on an island in the archipelago. The series is based on the book *Sommaren 1985* by John Ajvide Lindqvist, a master at blending Swedish realism with the supernatural. Behind the scenes, an intensive effort is underway to create the mermaid and make her look authentic.