Story in The Hastur Cycle by James Blish. The narrator meets with Bill Atheling, who has recently married the artist Samantha Brock. They discuss Robert W. Chambers and his book, The King In Yellow. Bill has gained a copy of the Play, allegedly written by Chambers, via H.P. Lovecraft (although the narrator suggests that Bill may have written it himself). The Dream-Leech is intended as a sequel to this story.