Courtesy of Lionsgate Lionsgate and Suretone Pictures have unveiled the chilling first trailer for Do Not Enter, a thriller that plunges a group of urban explorers into a deadly hunt for hidden treasure inside a decaying, haunted hotel. The film marks the feature debut of veteran music video director Marc Klasfeld and is penned by horror script writer Stephen Susco (The Grudge, Unfriended). Produced by Suretone Entertainment's Jordan Schur, Do Not Enter promises a tense, genre-bending ride that fuses paranormal terror with gritty human conflict.