"The dream detective" by Sax Rohmer is a collection of detective stories written in the early 20th century. It follows the eccentric, occult-leaning sleuth Moris Klaw and his sharp-witted daughter Isis as they unravel uncanny crimes often tied to museums, relics, and legends, accompanied by a skeptical inspector and a journalist-biographer. Expect locked-room puzzles, exotic lore, and audacious disguises. The opening of this collection presents two complete cases and the start of a third. First, a night watchman dies in a locked gallery at the Menzies Museum; Klaw’s “dream” method and keen observation reveal a booby‑trapped “Athenean Harp” that lethally pricks whoever lifts it after it has been played, and the culprit proves to be the curator’s sleepwalking daughter unknowingly setting events in motion. Next, an Egyptian potsherd coveted by a suave new neighbor leads to eerie séances and a daring theft; the twist shows that “Doctor Zeda” and the phantom singer were Klaw in disguise and Isis, retrieving the artifact as a matter of poetic justice. The third tale opens with Klaw and allies called to Crespie Hall, where a new owner is found slain by a crusader’s ax in the old banqueting hall, setting the stage for another impossible‑seeming mystery. (This is an automatically generated summary.)