On what is supposed to be her last day at work, detective Sarah Linden is called to the scene of a violent crime after a blood-covered woman's sweater is found in a park. There is no body however. The police have also found an ATM card in the name of Stan Larsen. Sarah and her replacement, Stephen Holder, follow-up and when they learn that the Larsen's 17 year-old daughter Rosie did not spend the weekend at a friend's house and has not been seen since Friday night, they suspect the worst. While Rosie's parents Mitch and Stan try to locate her on their own, the police concentrate on searching the park where they eventually discover a car at the bottom of a small lake with the body of a young woman in the trunk. They also learn that the car is registered to the election campaign of city councilman Darren Richmond who is running for mayor.