ZATANNA Writer Emerald Fennell Teases "Scary And Intense" Script; Has No Idea If She'll Direct We recently learned that Promising Young Woman director Emerald Fennell has signed on to write a Zatanna movie for Warner Bros. and Bad Robot, and she's now provided an update on the script... RorMachine | 4/3/2021 Though we only Promising Young Woman director Emerald Fennell is set to write the Zatanna movie for Warner Bros.' DC Films and Bad Robot, it seems she's been working on the story for a while. During an interview with Variety, Fennel was asked about her decision to sign on for a big studio superhero movie, and revealed that she's been busy developing the project with Bad Robot - though it doesn't sound like she's actually put pen to paper yet.