It's been raining cats and dogs in Mayville Heights. The small town has been deluged and now the local artist's co-op is on the verge of flooding. Kathleen has been helping her friends save their creations. The artwork survives but when a mask maker is found drowned in the basement, Kathleen questions whether the death was accidental. With the help of handsome detective Marcus Gordon and her cats' extraordinary powers of detection - it is up to Kathleen to unmask a killer.