内容简介：
DCS Fran Harman's relationship with Assistant Chief Constable Mark Turner is going well and they are buying a house together. At work, a former protege, Simon Gates, has just become her new boss. But there are complications with both Simon and Mark's daughter. Even the environment is hostile, the water in Fran's village tainted by something in the local reservoir. Some good old-fashioned detective work seems a useful antidote. Then a dramatic discovery leads to her case becoming a full-blown murder investigation. As the investigation takes its toll on those around her, the waters surrounding both her future in the force and with Mark become increasingly muddy.