What the heck is &Black Mirror: Bandersnatch& It probably not just a regular episode of the critically acclaimed science fiction anthology series.

Netflix has been pretty cryptic about it, only announcing its existence last week, ahead of a December 28 release. Given the reported 5 hour, 12 minute runtime, &Bandersnatch& may be the choose-your-own-adventure episode that we know was in the works — in that case, it wouldn&t actually take that hours and hours to watch, but instead would incorporate multiple paths totaling five hours of footage. Today, Netflix released a trailer for what it describing as &a Black Mirror event.& The story takes place in 1984 and focuses on a programmer (Fionn Whitehead) adapting a fantasy novel into a computer game. The trailer doesn&t quite come out and say that this will be an interactive episode, but the subject matter and the tagline (&change your mind — change your life — change your past — your present — your future&) seem to be awfully suggestive. And we won&t have to wait much longer to find out: Netflix says &Black Mirror: Bandersnatch& goes live tomorrow.