Memory installation

On New Year's Eve, amidst the height of the fireworks, something strange happened. Later, in the backyard of a high-rise building, the body of a girl was found, covered with a lace white fabric and dusted with fluffy snow, like cotton blossoms. Around her head, blood spread in the semblance of a halo from medieval icons. In the festive, mad rush, the tragedy occurred without witnesses. Murder or suicide? Only one of the three knows the answer. Given: theater, 19th and 21st centuries, amnesia or memory experiment, three unique men, an investigator, a psychiatrist with detective skills. This puzzle book will surprise, scare, invigorate the inner detective, and teach amusing English phrases.