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In 2018, two paralegals were shot dead while at work in Scottsdale, Arizona. Four more victims were linked to the killing - and a serial killer was supected of being at large.
On Valentines' Day 2007, police in Southern California were called to a particularly violent murder scene. Advances in forensic genealogy finally solved the case.
In 1984, a young woman's body was discovered in a lane close to her home in Bath, England. How did police eventually track down the perpetrator of this heinous attack?