Calamity by the Carwash (A Mabel Wickles mystery Book 2)

A marital spat at a carwash turns deadly - and Mabel Wickles, Parson's Cove's amateur sleuth, isn't buying the claim that the victim's wife bashed him over the head with a brick. However, when the woman confesses to the murder, Mabel decides to investigate the crime herself - along with help from her best friend Flori, her cat Sammy, and a busload of senior citizens.