The Noh Mask Murder by Akimitsu Tagaki

First published in Japan in 1949; published in translation by Pushkin Vertigo on June 4, 2024

Locked room mysteries are an abundant staple of Japanese crime fiction. The Noh Mask Murder is a classic example. Akimitsu Takagi published the novel shortly after World War II. A protagonist alludes to Japan’s collective shame, but the story is about murder rather than war or politics.

Akimitsu Takagi is the novel’s initial narrator. In 1946, he tells his old friend Koichi Yanagi about his idea of writing a detective story based on his firsthand account of solving an actual crime, making the novel a detective memoir. Koichi is staying at the mansion of Taijiro Chizui, whose father was a professor and also Koichi’s mentor. Taijiro’s father died of a heart attack ten years earlier. Unfortunately for the Chizui family, he may have hidden a family fortune before he died.

By chance, Koichi encounters another old friend outside Taijiro’s mansion. The friend is now a public prosecutor. They see a demon in one of the mansion’s windows and meet with Taijiro to investigate. They discover that the demon is actually a fearsome Noh mask that, according to legend, was cursed by a Noh actor.

Akimitsu gets his chance to investigate a crime when Koichi gives his name to Taijiro. Taijiro phones Koichi and tells him he has learned who is behind the mask. Akimitsu agrees to meet him immediately. Unfortunately, an “invisible killer” takes Taijiro’s life before Akimitsu can meet with him.

Taijiro died inside a locked bedroom from an apparent heart attack. The Noh mask was found on the floor. The body has been sprinkled with jasmine-scented perfume. Someone had ordered the delivery of three coffins in advance of Taijiro’s death. Before long, three coffins fall short of the family’s needs.

Akimitsu cannot solve the crimes, but the public prosecutor eventually sends him a journal — a detective memoir — that unravels the mystery. The journal was written by Koichi. After he provides a lesson in Noh theater and reviews the literature of locked room mysteries, Koichi introduces members of the Chizui family, including a madwoman who plays the piano and a monstrous man named Rintaro who scorns humanity. Only Sawako seems normal, but at 28, never permitted to love or marry, she is expected to be the lady of the house, little more than a glorified maid. Sawako’s dreams about the mask put her in fear for Koichi’s life.

One of the armchair detectives favors Sawako as the prime suspect. The other believes Rintaro to be the culprit, yet suspects abound. Several clues are found in a poem in the madwoman’s diary. A note written in shorthand provides another. An STD provides a clue that adds the possibility of incest to a dark plot. A key clue is in the phrase (repeated by two ill-fated characters) “eighty-eight in eighty-two” followed by the word Portia.

Koichi works out the locked room mystery, deduces how each victim was made to die from a heart attack, and discovers the killer’s identity while a third of the story remains to be told. The novel ends with a letter from the prosecutor, written after Koichi finished his journal, that adds a twist to Koichi’s account of the murder. A postscript to the letter adds a final surprising revelation that completes the story. As is common in Japanese mysteries, the plot is intricate and no plot threads are left dangling.

Greed or revenge are the likely motives for the murders, depending upon the killer’s identity. Takagi offers philosophical discussions about the difference between revenge and justice, illustrated with examples from feudal Japan, including the 47 Ronin. Takagi leaves it to the reader to decide whether revenge might justify the killings (or some of them) that fill the pages of The Noh Mask Murder.

Crime fiction fans don’t need to be locked room mystery fans to appreciate The Noh Mask Murder. The locked room is almost a sideshow. The story is akin to the traditional mystery in which all the suspects are assembled in a room while the detective talks through the clues and reveals the killer’s identity. Takagi provides enough suspects to keep the reader guessing as Koichi works his way through the possibilities. It is the ending, however, that gives the mystery its classic nature by forcing the reader to rethink an apparently sound solution to the killer’s identity.

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