From the back cover:
When Micah Lassiter made a promise, he kept it-no matter what it cost him. But his latest undercover assignment-protecting a wealthy man's daughter from the crazed killer stalking her-was testing that rock-solid code of honor as nothing ever had.
Prudence Street was too independent to accept anyone's help, so he had to make her believe he was nothing more than her new next-door neighbor. But watching over this beautiful, beguiling woman had turned into the sweetest torture he had ever known.
And it had led him to make another promise-to himself. When this was over, when she was safe at last, he meant to make her his-forever.