Three years after leaving Bellweather and a marriage that nearly destroyed her, Rachel Avery returns for one reason: her ex-husband Nathan says he finally has proof that could clear her name. Before she can meet him, Nathan is murdered.
Security footage appears to place Rachel at his office during the murder window. A visitor credential carries her name. The evidence points in one direction-straight at the ex-wife.
But Rachel knows where she really was: sitting with Claire Cross, Nathan's new wife. Claire could give Rachel the alibi that saves her. Instead, she tells the police they never met.
As Rachel investigates the footage that ruined her life three years earlier, she discovers an original recording, a hidden archive, and dangerous secrets buried inside Nathan's carefully controlled world. To prove her innocence, Rachel must decide whether she can trust the one woman with the power to save her-and uncover who is willing to kill to keep the past from being seen.