Zili Zhang wasn’t always a badly paid security guard. He was once one of the best detectives on the police force. That is until injuries sustained during an investigation into a gruesome and unsolved murder case forced him into early retirement. That was five years ago and the killings have started again. Determined to track down the killer, Zhang is drawn towards a mysterious woman seemingly connected to each victim. But nothing is what it appears to be in this ground breaking and unforgettable crime thriller.