When Enola Holmes-Sherlock's teen sister-discovers her mother missing, she sets off to find her, becoming a super-sleuth in her own right as she outwits her famous brother and unravels a dangerous conspiracy around a mysterious young Lord.
 
The film is entertaining and original, but it did feel like they were trying to copy the Guy Ritchie style of Sherlock Holmes.
 
FUN FACT:  No reference to a younger sister was ever made in the original Doyle stories. Some readers have speculated that there could be another Holmes sibling, citing the fact that Sherlock never mentioned that he had a brother (Mycroft) until he showed up at Baker Street.