Millie Bobby Brown stars as Sherlock and Mycroft’s little sister in the upcoming series Enola Holmes, and our first decent look at it is intriguing.

The setup is that teenaged Enola’s mother goes missing, so she uses her sleuthing skills to try to find her, while outsmarting her big brothers and helping a runaway lord.

Helena Bonham Carter, Sam Claflin and Henry Cavill also star.

Enola Holmes is set to commence airing on September 23. Here’s that trailer, complete with slick use of Hole’s Celebrity Skin: