A woman out for revenge against her husband's mistress finds herself caught in a deadly game in this domestic noir thriller by an acclaimed British author.

Happily married to the headmaster of a prestigious boarding school, Louise enjoys a charmed life of dinner functions, distant travel, and domestic stability. But her perfect life suddenly comes apart when a journalist informs her that her charismatic husband is having an affair.

Louisa decides to learn more about her romantic rival. But her online snooping quickly turns to vengeful cyberbullying. When the woman is found dead, the police are called to investigate--and Louisa is suddenly in a lot of danger. Suspicion is falling on her . . . and she's beginning to suspect her husband of much more than infidelity.