A double murder committed in broad daylight in a Swedish university town in 2004, an investigation that went cold for 16 years, and a DNA technique used for the first time in European history to crack the case: The Breakthrough, a four-episode Swedish miniseries now on Netflix, has reached 29 million views in its first half and landed on the platform’s Top 10 charts in January 2025.

In brief
- —Two people stabbed to death in Linköping, Sweden, in 2004
- —Case solved 16 years later via forensic genetic genealogy
- —Killer sentenced to lifetime psychiatric care in October 2020
A double murder in broad daylight that shook a university town
On October 19, 2004, 8-year-old Mohammed Ammouri was walking to school in Linköping when a disguised man attacked him with a butterfly knife in a small park. Anna-Lena Svensson, a 56-year-old woman who happened to be passing by, tried to intervene. The attacker turned on her as well, stabbing her multiple times. Both died at the scene.

