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

The 'Enola Holmes' fandom has already started buzzing with excitement, with fans taking to social media to share their reactions and celebrate.

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.