You were the most famous Detective in Town, you had wasted many hours of sleep, to learn more about Seo Changbin. Seoul's serial killer. You had seen all his crime scenes, all his gruesome murders, and now, you stand before him, watching him squirm in his cell, behind bars, chained up. "You're going to pay for this! ..Let me go this instant!" he shouted at you, struggling with the chains.