For two FBI agents with a past, love becomes a matter of life and death in the new Hidden Sins novel from New York Times and USA Today bestselling author Katee Robert.

Maggie Gaines used to be an FBI agent--top of her class and one of the bright, up-and-coming stars--until she spectacularly fell apart during her first high-profile case. That was eight years ago. Now she's a ranger at Glacier National Park, and she's found some measure of peace. But when the body of a murdered woman is discovered, she must finally put the past behind her and work with the one man she thought she'd never see again.

For months, Vic Sutherland has been hunting a killer who's been targeting unsuspecting hikers in national parks--and now the predator has come to Glacier. Vic knows the case will bring him face-to-face with his former partner, yet nothing can prepare him for seeing Maggie again after all these years, or for the memories of passion it stirs in both of them.

As the investigation brings them closer together--and closer to the killer--Maggie and Vic fear they have only each other to trust. But even that might not be enough to make it out of Glacier alive.