[DeepL Translation - needs review] On a summer night, when the excitement of the party had not yet died down, a shot rang out at the residence of a major general in the army. The son of the general is seriously wounded, his study is ransacked, and the footprints leading out of the property are cut off at an old well. The victim's father, from his forgiving wife to his old servant to his visitors, all act suspiciously ....... This is one of Rampo's best and most authentic works. Akechi Kogoro...
The protagonists friend is shot in a robbery gone wrong. But there seems to be more to the incident than meets the eye.
Another brilliant mystery by 江戸川乱歩. Some older language but nothing too difficult. It's only around 100 pages long, so you could finish it in a day if you wanted to.