Mike Flanagan is a busy man. Just this week, his TV series remake of Stephen King ‘s horror classic, Carrie, premiered on Prime Video. Clayface , the body-horror movie inspired by the DC Comics character, for which he cowrote the script, hits theaters on Oct. 23. Now, he’s onto promoting his next completed project, The Exorcist: Martyrs, a film he called “the scariest movie I’ve ever made,” while at Friday’s Blumhouse panel at New York Comic Con. If you’ve been keeping track, Flanagan’s name has been attached to the iconic horror franchise, which began in 1973 and is based on the William Peter Blatty novel of the same name