Secret Identity (Harlequin Intrigue Series #1337)

Since leaving the CIA under questionable circumstances, Amanda Caldwell has been living a quiet, uneventful life in a sleepy mountain town. But when Rick Cooper, her former partner—and former lover—makes an unexpected reappearance, she senses things are about to get a lot more interesting.…

Rick's mission is to protect Amanda and her identity from an assassin who's picked up her trail. It isn't long before working together stirs up all the passion and energy they'd once shared on the job. And in Rick's bed. Still, there's more to Rick's assignment than he can share with his "partner." Revealing the truth wouldn't be smart. But keeping his secret could be deadly.