Popsugar Entertainment Halloween Costumes 2019 50 Best Horror Movie Costumes For Halloween 50 Horror-Movie Halloween Costumes That Will Freak Your Friends Out 27 July 2023 by Ryan Roschke View On One Page Photo 10 of 50 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 10 Father Merrin From "The Exorcist" What to wear as Father Merrin: A black priest's cassock with a long black coat and a wide-brimmed black hat. Wear a crucifix around your neck, too! How to act as Father Merrin: Extremely wise and unafraid of facing down your (literal) demons. Previous Next Start Slideshow Halloween Costumes 2019Scary Halloween CostumesHorrorPop Culture Halloween CostumesMoviesHalloween CostumesHalloween