Police chief of a small Massachusetts town, Cameron McDonald makes the toughest arrest of his life when his cousin Jamie comes to him and confesses that he's killed his terminally ill wife out of mercy. Now, a heated murder trial plunges the town into upheaval and drives a wedge into a contented marriage: Cameron, aiding the prosecution, is at odds with his wife, Allie, seduced by the notion of a man so in love with his wife that he'd grant all her wishes even death.