ENIGMA (4.5) by Carla Cassidy: Coming out of a coma after six months, Jared Maddox has not only subconsciously bonded with the nurse who's cared for him, he's fallen in love with her. Running from The Facility, where he was subjected to genetic experiments, Jared knows he can't keep Willa Tyler in his life, but he needs her when his safety is threatened. Lonely Willa is drawn to the man with no name, and when his mental call yanks her from a sound sleep, she responds. Soon she's on the run, trying to protect herself and her patient from a madman who will stop at nothing to complete his experiments. This is Cassidy at her best, with a surplus of villains, lovers and possibilities. The plot is taut, the action nearly nonstop, and the romance sizzles.