Eumenides Logical Reasoning

Context: Eumenides and La Phi are in a fierce battle to uncover the truth behind the 1.30 hostage case. To do so, both of them are searching for Đinh Khoa—a legendary investigator with a 100% case-solving rate—who was the commanding officer of the case at the time but has since retired and gone into seclusion. His reason for disappearing is closely tied to the 1.12 dismemberment case, in which a female victim was brutally murdered and her body parts were discarded in multiple locations. By the time the dismemberment case happened, Đinh Khoa had already retired. However, the police—especially Hoàng Kiệt Viễn, who led the investigation into the case—would still occasionally seek his advice. This time was no different: Hoàng Kiệt Viễn visited Đinh Khoa for guidance, but instead of providing any help, Đinh Khoa completely vanished from public life. La Phi initially assumed that Đinh Khoa went into hiding to protect his reputation, believing that the 1.12 case was too difficult for him to solve. However, the real reason behind Đinh Khoa’s disappearance was entirely different—one that La Phi would only understand after solving the dismemberment case. Before this, La Phi had also visited Hoàng Kiệt Viễn at his bar to gather information about the case. The bar itself was actually part of Hoang Kiet Vien strategy to lure out the killer. According to his profiling, the murderer was highly skilled with knives, had a twisted personality, and enjoyed intense music. To attract this …