Rather than being a Hollywood board room creation, Enola Holmes is in actuality based on the first book in a series by author Nancy Springer, and serves as an origin story for the young eponymous protagonist (Millie Bobby Brown), who is the much younger sister of Mycroft (Sam Claflin) and Sherlock (Henry Cavill). Being more than a decade apart in age, Enola and her brothers lives don’t really line up at all, but she has had a lovely adolescence all the same – raised and homeschooled by her single mother, Eudoria (Helena Bonham Carter).
