American psychologist John Holden arrives in London to participate in a symposium aiming to expose witchcraft and devil-worship as a fraud, with attention centered on a cult run by a Julian Karswell. Debarking his plane, Holden learns that the symposium leader, Henry Harrington, has suddenly died and he is now in charge. What only the audience knows is that Harrington was clearly killed by a demon, apparently summoned by Karswell to avenge his persecution. Despite both threatening and cajoling behavior by Karswell, Holden determines to proceed, though the only cult member willing to talk about his experiences is in a prison psychiatric ward, catatonic after allegedly killing yet another cult member. However, Harrington's niece, Joanna, believes, based on her uncle's notes, that Karswell may indeed have some satanic powers derived from an ancient tome in an obscure language which he has been able to translate, and attempts to warn the skeptic Holden. Karswell's mother also attempts to warn Holden off. However, the thing which begins to most get to Holden are the occasional, but mounting, sensory and mental disturbances he begins experiencing after an encounter with Karswell, and the discovery that, during this encounter, Karswell secretly slipped a slip of parchment with a curse in runic symbols on it into Holden's belongings, a parchment identical to one Harrington recorded having had passed to him in a similar manner shortly before his death... [N.B. Holden at no point stays at the Karswell estate].
从影评人到普通观众，《恶魔之夜》得到了各界的广泛关注和讨论。影评人们称赞其在情节设计和人物刻画上的巨大突破。
《恶魔之夜》该片讲述了少女一路与命运的抗争，最终找到自我，也收获纯真情缘的故事。电影延续原著原剧，准备唤起全民对这段师徒虐恋的追剧回忆。
没有精心搭建的造景、没有靠灯光营造的氛围，更没有强情节、快节奏、多反转的人造戏剧元素
大自然是人物的舞台，人在自然中“自然”地生存着，人与自然浑然一体。草原、河流、山峦、羊群、马匹、与人的生存状态，水乳交融地构成和还原了一种原生态关系。
