Colton By Marriage; Covert Agent's Virgin Affair
Subtitle: 2 in 1
Publisher: Mills & Boon
Published: 2011
ISBN-13: 9780263885088
Copyright date: 2010
First sentence: As the first blow crashed into his right shoulder, FBI special agent Jake Pierson wasn’t thinking about self-defense. He’d been deep in his head, preparing and memorizing backstory for his latest undercover assignment.
Description: Book 2 - Covert Agent's Covert Affair - Linda Conrad 
Undercover agent Jake Pierson figures one romantic dinner will get never-been-kissed librarian Mary Walsh to tell him everything she knows about her late father's criminal activities. But the more Mary talks, the more Jake wants to shut her up with kisses. Because he's falling for his own too-trusting target-and there isn't a damn thing he can do about it. Well, maybe one thing... With her shiny new lease on life, Mary has become wiser about a lot of things. For one, she can spot a liar a mile away. She knows her gorgeous new boyfriend is hiding something. And she has a sneaking suspicion those secrets will get them both killed unless he trusts her with the truth.