Here’s another creepy trailer, a very quick teaser that debuted at the Blumhouse Productions presentation this afternoon at WonderCon. Picking up after events in the first movie, Sinister 2 traps a mother (Shannyn Sossamon) and her 9-year-old twin sons (real-life twins Robert and Dartanian Sloan) in a rural house haunted by the evil spirit of Buhguul. That is one nasty looking blade. Directed by Ciaran Foy and written by Scott Derrickson and C. Robert Cargil from the original fright fest, Sinister 2 opens August 21.