After a dangerous incident, Sergeant Roxanne Calloway has left the RCMP's Major Crimes Unit and is now working as the Team Commander of the Fiskar Bay detachment. Roxanne is adjusting to her new job when the body of retired Sergeant Bill Gilchrist, her predecessor, is discovered in a ditch at the side of the road. Spring in Fiskar Bay often means flooding as the normally peaceful stream—home to ducks and teals and the occasional blue heron during the warmer months—fills to the top of its banks with fast-moving, murky brown water, sweeping chunks of ice and broken tree branches along with it. The locals from the close-knit community show up in droves to help sandbag and Roxanne organizes the local RCMP to help with the effort. But when another RCMP officer is found dead, tensions begin to rise as quickly as the water levels. Roxanne moved to Fiskar Bay to keep herself out of harm's way, but with a cop killer on the loose, she isn't sure who she can trust. Can Roxanne find the killer before it's too late?