The 25,000 DNA Swabs That Found Yara's Killer

The Yara Gambirasio murder and Italy's biggest DNA manhunt. After 13-year-old Yara vanished in Brembate di Sopra on 26 Nov 2010, her body was found 3 months later in Chignolo d'Isola with a single trace of male DNA, Ignoto 1. The film follows the 18,000 to 25,000-swab dragnet, the Y-chromosome search for Giuseppe Guerinoni's son Massimo Bossetti, and why missing mitochondrial DNA leaves his life sentence controversial.