本片是一部美国恐怖片，上映于2010-05-25，由Amy Holden Jones导演，由诺亚·塞根/Andrea Renda/Elina Madison主演。
剧情简介：In this genre-defying grind-house throwback, a group of drug-addled, sexually deviant medical students are systematically terrorized by Wilma and John Hopper. The Hoppers, serial murderers and rapists, mysteriously return from the 1970s, and bring horrifying psychedelia with them. With comedy, subversion, satire and true gore, the students must face escalating attacks, shocking circumstances and visceral disgust.
外文名：Someone's Knocking at the Door
类型：恐怖 / 喜剧 / 奇幻
地区：美国
导演：Amy Holden Jones / Roshan Sethi / Hayley Schore
编剧：查德·菲林 / Roham Ghodsi
演员：诺亚·塞根 / Andrea Renda / Elina Madison / 埃兹拉·巴辛顿 / Jon Budinoff / Silvia Spross / Ricardo Gray / Timothy Muskatell / 卢·坦普尔
