Netflix's The Breakthrough is a dramatized miniseries based on the true story of a 2004 double murder in Sweden. The series follows the sixteen-year investigation, highlighting the crucial role of forensic genealogy in finally identifying the killer, Daniel Nyqvist. While inspired by real events, the show fictionalizes some aspects of the case, including character names and certain plot details, for dramatic effect. The real-life investigation utilized newly passed legislation allowing access to commercial genealogy databases, a pivotal development in solving the cold case. The show ultimately recounts both the tragic crime and the innovative investigative techniques that brought it to a resolution.