New York Times bestselling author Stephen White returns with a gripping thriller about the one devastating secret that could cost Alan Gregory everything—the first of the dramatic two-part conclusion to his acclaimed bestselling series.

Clinical psychologist and Boulder resident Alan Gregory is finally beginning to feel settled, hopeful that a long period of upheaval in his private life is behind him. He refocuses his energy on his clinical psychology practice, where a beguiling new patient is challenging his values. The interlude of calm doesn’t last, of course: Alan’s dear friend Diane is showing signs of a long-simmering emotional collapse, and Alan’s greatest fear—the exposure of his most dangerous secret—has become something he can’t ignore.

A new witness has surfaced, causing authorities to reopen their investigation into the suicide death of a woman named J. Winter Brown. When Alan and his equally culpable friend Sam Purdy inadvertently disclose details of their involvement in her death to a desperate drug dealer, any confidence they felt about riding out the new investigation evaporates. The trail that leads back to Alan and Sam, once cold, has turned white-hot.

With his vulnerability mounting daily, Alan begins to fear that his mesmerizing new patient may be the catalyst that can cause everything he treasures—his marriage, family, friendship, and future—to implode. As the authorities close in, the story hurtles toward a conclusion that will set the stage for the most unexpected of outcomes: the final act of the Alan Gregory saga.