Line of fire / Stephen White.

Enhanced descriptions from Syndetics:

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.