Millie Bobby Brown is Sherlock Holmes' rebellious teen sister in upcoming film 'Enola Holmes'

Move over, Sherlock Holmes. There's a new detective in town, and she's none other than the baby sister of genius brothers Sherlock and Mycroft.

"Stranger Things" star Millie Bobbie Brown is set to play Enola Holmes in Netflix's upcoming detective film, the streaming giant announced.

Sherlock and Mycroft Holmes have a younger sister — and this September, she’s taking her first case.

Millie Bobby Brown, Henry Cavill, and Sam Claflin star in Enola Holmes pic.twitter.com/etnfJLArFm

— Netflix (@netflix) June 25, 2020

Henry Cavill and Sam Claflin will also be starring in the film, which is said to premiere in September this year.

The film is based on Nancy Springer's Edgar Award-nominated book series, The Enola Holmes Mysteries.

Set in England 1884, the film tells the story of Sherlock and Mycroft's rebellious teen sister Enola, who one day wakes to find that her mother has disappeared. She escapes from her brothers' grasp to search for her mother in London, gets entangled in a mystery, and becomes a super-sleuth in her own right.

The game is afoot!

—JCB, GMA News