Summoning 'Slender Man' proves a pretty bad decision in creepy new trailer

The next look at the Slender Man film is here, and yeah, it looks pretty frightening.
Based on the internet-created boogeyman-like figure with a blank face and black suit, Slender Man takes the creepy urban myth and turns it into a supernatural horror film villain.
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Set in a small town in Massachusetts, the film sees a group of friends perform a summoning ritual in an attempt to debunk Slender Man lore. One of them goes missing, so the gro