Trapped in a loveless and neglectful marriage with her husband Colin (Jeffrey Vincent Parise), housewife Brooke (Emilie de Ravin) begins a steamy extramarital affair with Jake (Leo Howard), a younger, charismatic insurance agent. Unbeknownst to Brooke, Jake is a sociopath who lures her into a bloody conspiracy to murder her husband and collect his life insurance. As Brooke realizes the true extent of Jake's violent, unhinged nature, she is forced into a high-stakes game of deception to avoid becoming his next victim.