She never lets a rule stand in her way. He plays everything by the book. If these two can learn to work together, they just might catch a killer.Miss Cassandra Moore has one obsession – to exact revenge for the death of her sister. She doesn't yet know how she'll find the blackguard, only that she's willing to do anything it takes to obtain retribution. The only thing standing in her way is a man who insists upon doing everything by the numbers.Charles Strait believes in an ordered life. He's professional at work, a dutiful friend and son, and when he turns his eye toward seduction, he only dallies with women suitable to the task. So when he's paired with a gently-bred miss to catch a thief, his carefully organized world is blown apart. Such a woman has no business working at an inquiry agency, and even less business taking a starring role in his nightly fantasies. As if working alongside her isn't distracting enough, Charles has the sneaking suspicion that Miss Moore isn't the woman she pretends to be. A thirst for vengeance lies behind her serene façade, one that goes against every notion of justice he has. But when the killer she seeks turns his sights on her, Charles will have to decide how far past the bounds of law and order he's willing to go to protect the woman he loves.