The Breakthrough follows a double murder that took 16 years to solve — much like a real-life incident that occurred in Sweden in 2004.. Based on the 2021 novel of the same name, the Netflix ...

The limited series unfolds into a story about eight-year-old Adnan (Marley Norstad) and 56-year-old Gunilla (Anna Azcárate) who were killed in broad daylight in 2004, in Linköping, Sweden.