The clock was ticking… Detective Rafe Morgan knew that, as a psychologist, Darby Steele was used to people coming to her in need. But now she was the one in danger. A serial killer had made her a pawn in a sick game, sending her photos of his targets with clocks counting down. As a part-time bomb technician, Rafe was uniquely capable of keeping Darby safe. Usually psychologists rubbed Rafe the wrong way, but when it came to Darby, his urge to protect and serve went way beyond the badge. Getting to know the beautiful doctor had opened Rafe's eyes—and his heart. But if their elusive bomber had his way, Rafe would never get a chance to prove just how far he'd go to keep Darby alive.

IT'S A CASE OF TAKEN IDENTITY IN LENA DIAZ'S UNDERCOVER TWIN! DEA agent Nick Morgan had no choice but to break up with the love of his life, Heather Bannon. He knew that if he was seen anywhere near the gorgeous P.I., he could kiss his career goodbye. But when Heather's twin is abducted, Nick reconsiders his priorities. As Nick leads Heather on a dangerous undercover mission to rescue her sister and topple an elusive drug lord, he knows he was wrong to end their relationship. Working side by side, Nick realizes his love for her is as strong as ever, and he'll risk his life to prove it. Having Heather pose as her twin—down to her tattoos—could be genius…or a fatal mistake.