This non-fiction account delves deeply into a specific unsolved murder case in Korean society. It analyzes the shock at the time of the incident, the limitations of the initial investigation, and vividly portrays the indelible pain and trauma left on the victim's family and the local community by the case that fell into a labyrinth. The book explores the possibility of reinvestigation through modern techniques such as forensic science and profiling, and includes the author's persistent pursuit, along with the frustrations and hopes encountered during that process. It further criticizes the structural problems of the judicial system through statistics on unsolved cases, discusses the meaning and remaining challenges of abolishing the statute of limitations, and emphasizes the importance of protecting victims' rights and social attention. Ultimately, it reflects on the unresolved questions, re-examines the meaning of justice, stresses the importance of record-keeping, and conveys the message that the thread towards the truth, which has not yet arrived, must not be let go.