Retired librarian and bookshop owner May Morrigan lives in the affluent village of Blackheath with Fletcher, her best friend since they met decades ago, and May's two dogs. What could be more normal? But May is not your average little old lady . . .

After an unpleasant church volunteer and an annoying local butcher meet their untimely ends, Fletcher and May team up to do some sleuthing. Soon, the elderly pair start working with a young journalist to investigate the case of a missing girl and its possible link to previous unsolved crimes. May finds this new project quite intriguing. She's never met a murderer before--and now she just may get the chance, if they play their cards right . . .