The Thursday Murder Club by Richard Osman
The Thursday Murder Club is charming. Elizabeth, Joyce, Ibrahim, and Ron meet weekly to hash out cold cases, happily figuring out who the killer was that the cops missed. Then the part owner/builder of The Coopers Chase Retirement Village is found bludgeoned to death, and the four are determined to try their hand at solving a current case. They just need an in with the cops - maybe that nice PC Donna de Freitas. It's fun to watch the four finagle their way into the case. They manipulate, coerce, and call in as many favors as they can in the search for who dunnit.
The actual murder mystery itself was not as stellar as the cast. It was convoluted, with more than enough red herrings and false trails. I guess I adored the characters but wish the mystery had been a little tighter....