..".a strictly fair-play, by-the-book murder conundrum, brilliant, logical and down-to-earth. It is what Leroux does with this honourable, limited format that makes it so rich and strange. Taking advantage of the mechanical artificiality and unreality of this fictive world where violent death evinces no stronger emotion than curiosity and makes hardly a ripple in the pool of everyday life, he makes the realistic narrative background as bizarre as the plot it frames. This is what we're not used to, and what, 90 years later, makes this as compelling and crazy a nightmare as the Surrealists ever dreamed."