The Cat and the Pendulum. The Psychic Cat Mysteries, #5

Masterful psychic cat detective Mr. Poe is cunning enough to solve any mystery Haven throws at him. When his mentor, the zombie sheriff Gwyneth Gresham, fails to return from a trip to her ranch, Mr. Poe is the only one who suspects foul play. With only the help of his protege, a kitten named Louisa May, Mr. Poe must discover Gwyn's whereabouts-and rescue her from dangers of her own making. The fifth novelette in the series.