An experienced detective finds himself entangled in a dangerous web of deceit and danger.

Hired by a jilted bride to track her cheating husband, Spenser’s investigation takes an unexpected turn when he crosses paths with another detective assigned to follow the unfaithful wife. They aren't the most trusting couple in town, but as it turns out, they are the most dangerous.

As they dig deeper into the case, they uncover shocking secrets that threaten to unravel everything.

One of the great series in the history of the American detective story gets even better when Spenser is hired by a jilted bride to follow a cheating husband, only to cross paths with a detective hired to tail the two-timing wife. They aren't the most trusting couple in town, but as it turns out, they are the most dangerous.