Focusing on the teenage sister of an already-famous Sherlock Holmes, Netflix’s Enola Holmes stars Millie Bobby Brown as the title character. Directed by Harry Bradbeer from a screenplay by Jack Thorne, Enola Holmes is the mystery film based on the first book in the series of the same name by Nancy Springer. While searching for her missing mother, intrepid teen Enola Holmes (Millie Bobby Brown) uses her sleuthing skills to outsmart big brother Sherlock (Henry Cavill) and help a runaway lord.