"Have you seen the Yellow Sign?" Hastur was not a creation of H.P. Lovecraft but an adaptation of concepts created by Ambrose Bierce and Robert W. Chambers. Nevertheless, Hastur, AKA The King in Yellow, has since gone on to become one of the most iconic Great Old Ones. Whether the mysterious Lord of Leng in the Dreamlands or Cthulhu's alleged half-brother, he is a figure who haunts the dreams of those mortals who touch upon even the barest knowledge of his existence. THE BOOK OF HASTUR is a collection of short stories and novellas depicting Hastur's influence over a variety of individuals as well as those individuals affected by his presence. Some of them are horror, some of them are Pulp adventure, and some are a mixture of the two.