20 baffling forensic cases that stumped everyone
10 of 21
The murder of Meredith Kercher
In 2007, Meredith Kercher, an American college student studying in Italy, was fatally stabbed in her apartment. Trace amounts of the DNA of her roommate, Amanda Knox, and Amanda’s boyfriend were found at the scene and on the knife that was presumed to be the weapon. Despite the fact that another man’s fingerprints and DNA were found at the scene – and that the knife couldn’t have been the weapon (it didn’t have Meredith’s DNA on it) – Amanda and her boyfriend were convicted. In 2015, after a lengthy appeal process, the two were exonerated.