Small-town librarian Kathleen Paulson often seems to gets mixed up in murder, but luckily, her very special cats always find a way to help her close a case. The charming Minnesota town of Mayville Heights is hosting a music festival, and the whole place is bustling with musicians and tourists. Kathleen is looking forward to taking in some fabulous performances--and her two cats, Owen and Hercules, are looking forward to taking in some fabulous sardine crackers. But then the trio stumbles across a dead body by the river. The victim is a close friend--who also happens to be a look-alike of a popular cabaret singer set to perform at the festival. Who could have wanted to harm this innocent girl? Was it a case of mistaken identity? As accusations abound and suspicions swirl, Kathleen, Hercules and Owen will put their abilities--both mundane and magical--to the test, and lay down the paw.