She Walks At Night (Seishi Yokomizo)

What if Agatha Christie had been trained by Edgar Allan Poe? Yokomizo's mysteries combine the fair play detective novel structure with an atmosphere of Grand Guignol. I snap up every mystery featuring Kosuke Kindaichi, the series detective, as soon as it's translated. You can read these in any order, but She Walks At Night is a great and characteristic place to start.