In His Sights (Redstone, Incorporated #4)

"She was a suspect in his investigation. But Redstone employee Kate Crawford was also the most captivating woman securities expert Rand Singleton had ever known. Despite the protective feelings she stirred, he couldn't reveal his true identity. He'd been sent to do a job. Getting emotionally involved with the vulnerable beauty wasn't an option. Kate could think of only one reason why an enigmatic, charm oozing man like Rand was in town- he was up to something. And she had too much at stake- professionally and emotionally- to fall prey to a seductive stranger's schemes. Still, with Rand's knee weakening caresses wreaking havoc on her heartstrings, would she be able to expose his secrets before he uncovered hers?" This is from the back cover of the book.