体育館の殺人 (taiikukan no satsujin, The Gymnasium Murder, 2012) is a mystery novel by AOSAKI Yuugo (青崎有吾, born 1991). The publishers, Sougen Suiri, often have an invented English title on their cover, and in this case it is The Black Umbrella Mystery, which might suggest some similarity to the first Ellery Queen mysteries, such as The Roman Hat Mystery. If that was what they wanted to suggest, the suggestion is certainly warranted. Although the book is a locked room mystery, th...| My Japanese bookshelf