New York Times bestselling author Linda Castillo has become renowned for her nail-biting novels of romantic suspense. Now she delivers an electrifying thriller about a secret that could mean one woman’s demise…  Until now, no one has suspected the truth about down-to-earth bookseller Julia Wainright. But the arrival of six threatening letters indicates someone has discovered her secret—and wants her to pay for her sins… Ever since he accidentally killed a fellow officer, ex-cop John Merrick has been tormented by the mistakes of his past. Now, called upon to repay a favor, he will do anything to keep Julia Wainright safe. To do that, though, he’ll first have to figure out what she’s hiding…  As the threats escalate, Julia and John must find a way to trust each other. Because if they don’t, a twisted stalker will make sure all the gruesome things he’s promised will come true…