As a cop on the night shift in Hopewell Falls, June Lyons drives drunks home and picks up the donuts. A former FBI agent, she ditched the Bureau when her husband died, and now she and her young daughter are back in upstate New York. When June discovers a young woman's body impaled on an ice shear in the frozen Mohawk River, news of the murder spreads fast - the dead girl was the daughter of a powerful local Congresswoman. Though June was born and raised in Hopewell Falls, the local police see her as an interloper - resentment that explodes in anger when the FBI arrive and deputize her.