Enter The Model Man by Genie Davis. This book really hit the spot. It's got thrills, it's got mystery, it's got love and a lot of silliness. Although marketed as a romance (and there's plenty of romance), it also has a strong whodunit element to the story. It reminded me strongly of one of my favorite writers, Janet Evanovich, but not in a derivative way.
So if you're looking for a fun read to prop up your piña colada, this might be a good choice. I'm happy to go look up some of her other books, too - after all, summer's not over yet! For a full review of the book, check it out here at Bewildering Stories. Enjoy!