Cast members have gathered in the U.K. as production gets underway. Here's what you need to know about the next installment.

Enola Holmes 3 is official in production and its cast confirmed! Production has begun in the UK on Netflix’s third installment of Enola Holmes. Millie Bobby Brown will return as the sleuth sister of Sherlock Holmes, and plenty of other cast members will be returning to reprise their roles.

The next installment in the mystery franchise will see Millie Bobby Brown return as the titular Holmes sibling alongside Henry Cavill as Sherlock.