Helena Bonham Carter is also among the cast returning for the threequel, now in production for the streaming giant.

"Enola Holmes 3", the Netflix movie franchise starring Millie Bobby Brown as Sherlock Holmes' younger sister, is officially in the works and began filming in the United Kingdom.

Millie Bobby Brown is returning to Netflix — and not just for Stranger Things 5. The actress & entrepreneur will also return to the screen in Enola Holmes 3. If you haven't seen the first two installments in the film series,