The Best of Dennis Wheatley" brings together three of his best-known works in one book. " The Devil Rides Out": in 1930s London Duc de Richleau & Rex van Ryn rescue their friend Simon Aron from a devil-worshipping cult. Rex falls for a woman named Tanith & takes her away from the cult. The group's leader comes after them & there is a desperate struggle to defeat the Angel of Death & escape the cult leader Mocata. " To the Devil a Daughter" tells the story of a group of practising Satanists who disguise themselves as ' The Children of the Lord'. Catherine
- a nun
- is one of this group. She is allowed to come home once a year on her birthday. On one of these trips home an occult writer named John Verney realizes that the group are Satanists & are preparing Catherine to become an avatar of Astaroth on her eighteenth birthday. " Gateway to Hell" sees the return of characters from " The Devil Rides Out". Rex van Ryn steals more than a million dollars from his family bank & vanishes in Buenos Aires. Rex's friends have suspicions about the ex-SS Gruppenfuhrer with whom he is said to have been consorting; they find themselves pursuing Rex to the Bolivian Andes & confronting Satanist forces once again."