"Bandersnatch forced the Black Mirror team — including executive producer Annabel Jones, creator and writer Charlie Brooker, director David Slade, and actors Will Poulter and Fionn Whitehead — to rethink many of the givens of filming a TV episode," says Jackson McHenry. "They had to find a way to write a script that contains myriad variations big and small, and then communicate each of those variations to the cast and crew. They had to shoot wildly different outcomes while maintaining character continuity and preserving an engaging plot. And, of course, they had to make sure the episode didn’t feel too complicated to actually watch." As Jones puts it, “If we’d have known how difficult it was going to be, we might not have done it.” ALSO: Watch Jimmy Fallon's Bandersnatch spoof.