With Murder on the Orient Express and Death on the Nile, we had done two very, pretty faithful adaptations of two pretty famous, pretty big books,” he then explained. “And Michael Green, the writer, and Kenneth Branagh, obviously, the director and [Hercule Poirot] felt that we should maybe surprise our audience with this and try something a little bit different.”
“And the main difference they were looking for was tonal,” Pritchard added. “They wanted to play a little bit with the horror genre, and they felt a Hallowe’en Party was a great launchpad into that.”