Millie Bobby Brown is set to return as the young detective Enola Holmes, as the makers announced that Enola Holmes 3 enters production. The films are based on The Enola Holmes Mysteries by Nancy Springer.

As Enola Holmes 2 teased two of Arthur Conan Doyle's famous characters, Dr Watson and Moriarty, Enola Holmes 3 finds Enola in the island nation of Malta as she struggles to balance her new case and her relationship with Tewkesbury.

Returning for Enola Holmes 3 with Brown are Louis Partridge as Tewkesbury, Himesh Patel as Dr John Watson, Henry Cavill as Sherlock Holmes, Helena Bonham Carter as Eudoria Holmes, and Sharon Duncan-Brewster as Moriarty.

Philip Barantini, who has directed the miniseries Adolescence, takes over as director of Enola Holmes 3 from Harry Bradbeer. He directs the film from a script by Jack Thorne, who has written the previous films in the series. Jake Bongiovi and Isobel Richards serve as executive producers for the film under the PCMA Productions banner, with Joshua Grode for Legendary Entertainment and Michael Dreyer. Millie Bobby Brown and Bobby Brown produce the film under the PCMA production banner, with Mary Parent, Ali Mendes, and Alex Garcia producing for Legendary Entertainment.