Their Killer Was Unmasked 30 Years Too Late. | The Saturday Night Strangler

This is the first case to use familial DNA tracing to posthumously identify a serial killer.

Joseph Kappen was a bouncer and driver in Port Talbot as well as a petty crook with a violent temper. In September 1973, he picked up two 16-year-old girls – Pauline Floyd and Geraldine Hughes – hitchhiking their way home after a night out. Kappen sexually assaulted and strangled both of them, before dumping their bodies in a wooded area in Llandarcy, near Neath, South Wales. The police investigation at the time failed to find the killer.

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