Joe Gray msyteries by Shirley Rousseau Murphy

Cat on the Edge features Joe Gray, a cat, who discovers that he can understand, speak and read human language and feel such human emotions as guilt and sympathy, but when he witnesses Beckwith's murder, he begins to wish that he was just a regular cat. This very fun mystery series is more of an fantasy as Joe Gray finds he can understand human speak and even speak it himself. He discovers another cat who is like him as well as a human who can turn herself into a cat and back to human again. But I will definitely read more of this series.