Enola Holmes : The case of the missing marquess

 Springer, N. (2006). The case of the missing marquess: an Enola Holmes mystery.  New York: Philomel Books.

Book 1 in the Enola Holmes Mysteries series follows Enola Holmes, the little sister of famous detective Sherlock. After the disappearance of her mother, Enola travels to London to find her, unwravelling mysteries as she goes. This is a fast-paced and suspenseful novel with a courageous main character set in Victorian England. It is heavily inspired by the Sherlock Holmes novels by Sir Arthur Conan Doyle and features several characters from those novels. It recently inspired Enola Holmes, a Netflix original movie starring Millie Bobby Brown and Henry Cavill. 

See clips and the trailer on the official Enola Holmes Netflix page Enola Holmes | Netflix Official Site