Mary Parent, Ali Mendes, and Alex Garcia are producing Enola Holmes 3 for Legendary Entertainment, with Millie Bobby Brown and Bobby Brown producing for Brown’s production company PCMA Productions. Jake Bongiovi and Isobel Richards will executive produce for PCMA.

Move over, Sherlock And Daughter, the original plucky young female Sherlock Holmes protégé is coming back. On Tuesday, Netflix announced that Enola Holmes 3 starring Millie Bobby Brown is in production.

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