Police Detective Pia Kirchhoff is about to leave on her long-delayed honeymoon when she receives a phone call. An elderly woman has been shot and killed while walking her dog. A short while later another murder is committed and the modus operandi is eerily similar - a woman is killed by a bullet that smashes through her kitchen window ... and in both cases the same weapon fired the shot. Two more murders follow in short order. None of the victims...