Enola Holmes is a 2020 mystery film based on the first book in the young adult fiction series of the same name by Nancy Springer. The story is about the teenage sister of the already-famous Sherlock Holmes, who travels to London to find her missing mother but ends up on a thrilling adventure, pairing up with a runaway lord as they attempt to solve a mystery that threatens the entire country. The film is directed by Harry Bradbeer, from a screenplay by Jack Thorne. Millie Bobby Brown stars as the title character, while also serving as a producer on the film. Henry Cavill, Sam Claflin, and Helena Bonham Carter also star.