In Wen County, a serial killer leaves a trail of riddles, leading an investigator on a harrowing pursuit through the shadows of the past and the depths of human psyche....

In a small, forgotten corner of Wen County, a serial killer's dark symphony resonates with chilling whispers, leading a young detective on a harrowing pursuit through the shadows of his own mind....

When a young historian discovers a hidden diary revealing a century-old murder mystery in Wen County, she embarks on a chilling quest to uncover the truth, only to find that the secrets of the past reach far beyond her imagination....