The Honjin Murders by Seishi Yokomizo
Friday, July 31, 2020 at 6:41AM 
First published in Japan in 1946; published in translation by Pushkin Vertigo on August 4, 2020
The Honjin Murders is a classic Japanese locked room mystery, first serialized in a Japanese magazine in 1946. When the mystery baffles the local police, a brilliant young detective is called to the scene and promptly solves the puzzle. The novel marks the detective's first of more than seventy appearances in Seishi Yokomizo's work. The detective is also a character in five Japanese films.
The story is set in 1937. Kenzo is the current master of the house of Ichiyanagi. Before the shogun was overthrown and the imperial government restored, the house was an inn for travelers who belonged to the nobility (a honjin). Nothing is more important to the Ichiyanagi family than being descendants of the owners of a honjin.
Kenzo and Katsuko were married in Kenzo’s home. Kenzo was about 40. His bride was about 25 and (to her shame) not a virgin, a confession she made just before the wedding. A scarred man with three fingers on his right hand inquired about Kenzo while passing through the village on Kenzo’s wedding day.
The post-wedding sake ceremony lasted all night. It was after midnight before Kenzo could take his new bride to their bedroom. Two hours later, a blood-curdling scream is heard. Kenzo’s family broke into the locked room and discovered that both had been hacked to death, apparently with a sword. The murder weapon disappeared with the killer, but how did the killer enter or leave a room that was locked from the inside?
Bloody three finger handprints point three fingers of guilt at a possible culprit, but that doesn’t solve the mystery of the locked room. Other characters who might be murder suspects are primarily Kenzo’s family members, including his mother and four siblings. His youngest brother is the family’s black sheep while his youngest sister is a bit simple. The sister has just buried a dead cat, which is apparently an ominous circumstance in Japanese mythology.
The stringed instrument known in Japan as the koto figures into the plot, in part because “the eerie strains of a koto being plucked with wild abandon” are heard just after the scream. A letter and a photo album that contain the words “My Mortal Enemy” provide another potential clue. Deciding which clues are real and which are red herrings adds to the fun, but to Seishi Yokomizo’s credit, none of the potential clues are completely extraneous to the story. Everything fits together and contributes to the mystery’s solution.
The police inspector, unable to make headway, summons Kosuke Kindaichi from Tokyo. Kosuke is unkempt and speaks with a stammer, but in the tradition of eccentric detectives, he pieces together obscure clues with ease. When Kosuke notices that the home’s library is filled with detective novels, he offers some literary criticism, expressing a preference for locked room mysteries that do not rely on a mechanical trick over those that do. Kosuke is a particular fan of Leroux’s Mystery of the Yellow Room and the locked room murder mysteries of John Dickson Carr.
The story is clever and complex, as good locked room mysteries tend to be. I probably miss the nuances of Japanese mysteries, having not grown up in the culture, but the unfamiliarity of the setting is part of the appeal of Japanese fiction. I doubt anyone will guess how the murder was committed. It may be possible for astute readers (and I’m not one of those) to puzzle out why it occurred. Whether the novel surprises the reader or not, following Kosuke’s deductive chain as he assembles the clues is fun. The Honjin Murders would be a perfect addition to the shelf of any devoted fan of locked room murder mysteries.
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