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 of a well-known cabaret singer set to perform at the festival--and the two happen to look incredibly alike. Who could have wanted to harm the dead woman? 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.