The drama tells the story of a cold case that went unsolved for 16 years and the arduous journey to finding the killer.

The Breakthrough follows a double murder that took 16 years to solve — much like a real-life incident that occurred in Sweden in 2004.

The Breakthrough,’ or ‘Genombrottet’ as it’s originally known, is a Swedish crime drama show that revolves around a tragic double homicide that goes unsolved for nearly two decades. After two unrelated residents of Linköping — Adnan and Gunilla — lose their lives to an elusive killer,

The Swedish series is based on the true-crime book The Breakthrough: How the genealogist solved the double murder in Linköping by Anna Bodin and Peter Sjölund. It follows a detective who teams up with a genealogist to uncover the mystery 16 years after it remains unsolved.