Folk horror is having a bit of a resurgence at the moment. Last year brought the Netflix thriller Apostle, Ari Aster returned with a new take on trauma in this summer's Midsommar, and the next buzzy folk horror you should put on your list is about to land in theaters. RLJE Films and Shudder are bringing the festival hit Gwen to theaters, VOD, and digital next month, ahead of the film's release on the Shudder streaming service. Written and directed by William McGregor (Misfits), Gwen follows a young girl in 19th Century Wales during a moment of crisis. …