Josie O'Gorman and the Meddlesome Major, Classics To Go

Mary Louise Burrows is a fifteen-year-old girl with unusual maturity and sleuthing abilities. Josie is the daughter of federal agent John O'Gorman who he has trained to function as an investigator. Together Mary Louise and Josie are a formidable match for any criminal and prove this once again in Mary Louise and Josie O'Gorman the eighth book in the Mary Louise detective series. (Goodreads)