THE EIGHTH DETECTIVE

Mathematician and first-time novelist Pavesi creates a metamystery that could as easily go in a bookstore’s puzzle section as on the crime shelves.

In 1930s Spain, Megan, Henry, and Bunny are alone in a house when Bunny is found stabbed to death. There must be an intruder, but there can’t be. Windows and doors are sealed, so it’s a locked-room mystery. Megan and Henry accuse each other, and of course they both know the truth—but does the reader? It’s the first in a collection of seven stories titled The White Murders written by mathematician-turned-novelist Grant McAllister, who lives in seclusion on a Mediterranean island. In the 1970s, book editor Julia Hart travels to the island to visit McAllister and talk about his book, which everyone knows editors do for obscure authors. McAllister had earlier written a research paper, “The Permutations of Detective Fiction,” on the mathematical structure of murder mysteries and the specific criteria that must be met. That sounds like as much fun as analyzing a joke, but his requirements make perfect sense: a victim, at least two suspects, a killer, and a detective. And there are combinations, such as the detective being the killer or multiple guilty parties or even—wait for it—the victim solving his own murder. In one story, a restaurateur tells customers “I am sad to say there has been a death on the premises,” and Miss Garrick, a teacher, is left to protect the crime scene. Elsewhere, McAllister and Hart exchange bloodless comments like “They never managed to find her killer.” “How unpleasant.” “Yes, it is rather.” Enclosing all the stories like a Russian doll is the question of why the editor visits the author at all. But both hold back secret motivations that drive the grand plot. The book abounds with complications and twists, and puzzle lovers will have fun predicting the endings of the stories. In one case, McAllister says readers have “enough evidence to solve this mystery for themselves.” Perhaps, perhaps.

A satisfying mystery for the casual reader, even more so for the careful one.