在这部乌巴尔多泰尔扎尼恐怖秀惊悚/恐怖片中,25岁的年轻导演阿莱西奥·里纳尔蒂（Giuseppe Soleri 饰）正在筹划自己的处女作，但是他写的恐怖剧本过于老套，以至于被制片人接连枪毙。在制片人的建议下，他找来畅销恐怖小说作家乌巴尔多·泰尔扎尼（Paolo Sassanelli 饰）的作品拜读，为即将到来的合作做功课。乌巴尔多的描写恐怖逼真，引人入胜，令阿莱西奥不愿释手，更经历了何其真实的噩梦。
数日后，他驱车前往乌巴尔多位于都灵的寓所，与这位恐怖名家合作撰写剧本。乌巴尔多风流倜傥，笑容和善，但其友善的面孔后面似乎总弥漫着一丝迫人的寒意。在都灵期间，阿莱西奥遭遇了诸多离奇的事件，更无意中走上一条黑暗的道路……
Alessio Rinaldi, a 25-year-old director, gets the charge from a producer to write the script of his first movie with Ubaldo Terzani, a well-known writer of horror novels. Alessio moves into Terzani's house to start this collaboration, and a strange relationship of psychological dependence grows between them: Ubaldo Terzani unveils his dark side, and Alessio fall in a desperate depth of craziness and nightmares. There is a reason why Terzani's bestsellers are so frightening ... Alessio will discover that reality can be unexpectedly more terrifying than every brainchild, and he will have to fight hard to escape Ubaldo Terzani's jaws.
乌巴尔多泰尔扎尼恐怖秀 In the Mouth of Ubaldo Terzani。
