When the remains of young women keep turning up in Kassel, Germany, the police believe the horrendous crimes are the work of a twisted serial killer who’s showing no signs of stopping. As the investigators compare notes, they realize what these victims have in common: they were all members of the same Internet dating site.

Personal trainer and motorcycle enthusiast Adrian Richter had gone online looking for love, and he’d thought he’d found the one. But when his new girlfriend ends up dead, the police suspect him of her gruesome murder. Hidden by a coworker, Adrian attempts to evade arrest while fighting to prove his innocence. Can he catch the killer before his next match meets the same tragic fate?