Meet the voice of the demon in The Exorcist. 👿 Actor Mercedes McCambridge and director William Friedkin explain the ingredients that went into creating that terrifying sound. Raw eggs?! This is a clip from Mark Kermode's 1998 documentary, The Fear of God: 25 Years of the Exorcist. In a new introduction filmed as its 50th anniversary draws near, he says: "It's still my favourite film of all time, and The Fear Of God is an attempt to explain why - to get to the heart of what it is about that film