This is an encyclopedic work, arranged by broad categories and then by original authors, of literary pastiches in which fictional characters have reappeared in new works after the deaths of the authors that created them. It includes book series that have continued under a deceased writer's real or pen name, undisguised offshoots issued under the new writer's name, posthumous collaborations in which a deceased author's unfinished manuscript is completed by another writer, unauthorized pastiches, and "biographies" of literary characters. The authors and works are entered under the following categories: Action and Adventure, Classics (18th Century and Earlier), Classics (19th Century), Classics (20th Century), Crime and Mystery, Espionage, Fantasy and Horror, Humor, Juveniles (19th Century), Juveniles (20th Century), Poets, Pulps, Romances, Science Fiction and Westerns. Each original author entry includes a short biography, a list of original works, and information on the pastiches based on the author's characters.

This reference work covers the supernatural and speculative fiction published by Arkham House Publishers, Inc., of Sauk City, Wisconsin. In 1937, promising Wisconsin writer August Derleth decided to publish a collection of the stories of his recently deceased friend, H. P. Lovecraft. After two years of failed attempts, Derleth and another Lovecraft fan, Donald Wandrei, published the collection themselves under the name of Arkham. In the years that followed, Arkham House published the works of many of the foremost American and British writers of weird fiction, including Basil Copper, Lord Dunsany, Robert E. Howard, and Robert Bloch. Arkham published Ray Bradbury's first book, Dark Carnival, in 1947. The work begins with a history of the house and biography of August Derleth; it also includes a chapter on H. P. Lovecraft's connection to Arkham. The main body of the text consists of chronologically listed descriptions and current values of the more than 230 titles published by Arkham House and its two imprints, Mycroft & Moran and Stanton & Lee. These entries detail editions, reprints, special points, restoration, care, buying and selling, investment, and future trends. Other features include alphabetical indeces of titles and authors, lists of scarcity and value ranking, a list of annual stock lists and catalogs, and a bibliography of reference literature. The book is illustrated throughout with dust jacket reproductions and photographs.

Here, in one convenient volume, is everything needed for the enjoyment of Holmess canon.