Ettie's sister, Florence Lapp, is in trouble.
Her house has burned down, and her gun is missing.
When Florence announces she's staying with Ettie and Elsa-May until the case is solved, Ettie is spurred on to solve the mystery fast. Events take a more serious turn when the gun shows up and is linked to a murder. Ettie finds out that Florence has some odd friends, and one of them has been charged over the shooting. Florence insists her friend...