male detective? The cover was dark like the characters were shrouded in the shadows. And the plot went along the lines of a female antiquarian that is sexually taken advantage over by the host of the party and decides to get some payback by stealing one of his priceless artifacts (I think it was a cat statue). She doesn't expect him to really notice but he does and he call in the police, that's when the sexy lead male detective/cop comes into the picture. It's a cat and mouse game between the two as she cannot stop stealing and selling the goods for her charity work and enjoys the thrill of stealing and the persistent cop.
I would really like to find this book again so please if you know what I'm talking about let me know.