This vintage Robert R McCammon novel titled "They Thirst" is a first edition horror paperback published by Pocket Books during the 1980s. The book, set in the United States, is written in English and revolves around the theme of vampires. As a horror genre piece, it likely features a chilling and thrilling storyline that captures the essence of the 1980s era. With its compact pocket book format, this vintage edition would be a valuable addition to any horror or vintage book collection.