Lethal Lies (Harlequin Romantic Suspense Series #1830)

Trusting the man she loves could cost her her life 

Putting her faith in someone who lies for a living isn't the safest thing Dr. Jillian Mahoney has ever done. But to stay alive, she has to believe the undercover agent—who's kidnapped her to prove his innocence—isn't a traitor to the FBI. And to help him, she must deny their intense attraction as they run from two vengeful killers. 

Her captor, Alex Malcom, has lived a life of lies—some worse than others. Still, there's one truth he's reluctant to disclose to Jillian, the woman of his dreams. One that could stop their relationship cold.