The Return of the Sorcerer ties into the book of magic appearing in stories by which horror writer?
Necronomicon The Necronomicon is a fictional grimoire (textbook of magic) appearing in the stories by horror writer H. P. Lovecraft and his followers. It was first mentioned in Lovecraft's 1924 short story "The Hound", written in 1922, though its purported author, the "Mad Arab" Abdul Alhazred, had been quoted a year earlier in Lovecraft's "The Nameless City". Among other things, the work contains an account of the Old Ones, their history, and the means for summoning them.
The Wall of Serpents The Wall of Serpents is a fantasy novella by American science fiction and fantasy authors L. Sprague de Camp and Fletcher Pratt. The fourth story in their Harold Shea series, it was first published in the June 1953 issue of the fantasy pulp magazine "Fantasy Fiction". It first appeared in book form, together with its sequel, "The Green Magician", in the collection "Wall of Serpents", issued in hardcover by Avalon Books in 1960; the book has been reissued by a number of other publishers since. It has also been reprinted in various anthologies and collections, including "Great Short Novels of Adult Fantasy I" (1972), "The Complete Compleat Enchanter" (1989), and "" (2007). It has been translated into Italian and German.