Transcript (en)

The shot was dodged by the opponent. Just as the assassin prepared to fire a follow-up shot, the opponent was suddenly struck down. The assassin looked stunned. Chaos erupted at the scene. The assassin realized someone was trying to frame him. At that moment, a group of police officers burst through the door. After confirming the assassin was dead, the sergeant distracted the other officers with an excuse. He then pulled out a glass vial. He poured an identical bullet casing onto the ground. Soon after, Interpol agent Louie arrived at the scene. He inserted two straws into the bullet hole. Through ballistic comparison analysis, he discovered that two bullets had been fired from different heights. One originated from the hotel where the killer was positioned, while the other came from the rooftop. The rooftop offered a wider field of view and easier escape routes. Lewis deduced the real shooter had fired from there. He then dried the water stains on the floor, successfully extracting a footprint. Analysis revealed the sole contained a metal component. Then Lewis arrived at the airport, convinced the killer would leave after committing the crime. Therefore, the killer would have to remove their shoes during security screening. Lewis reviewed the airport surveillance footage. He finally spotted the killer's figure, but the killer was extremely cautious, deliberately avoiding all cameras. Not a single frame captured the killer's face. Meanwhile, one of Lewis's subordinates also noticed something unusual. Just as he was about to report it, a figure flashed past behind him. A minute later, the subordinate began vomiting uncontrollably and collapsed unconscious. By the time Lewis rushed over, the subordinate had already stopped breathing. The coroner ruled the subordinate's death a heart attack. Lewis examined the scene with a magnifying glass and discovered a pinhole.