Adapted from the Korean version. This is about a dedicated detective trying to chase a seriel killer. The difference was that he had travelled in time at the end of the tunnel and the killer was still there. He had to enrol the help of a crime psychologist to track the culprit down. Great suspense and great tension. The actors all played their part well. Once you have started, you would want to know what happened. Good to have the Thai culture as the main backdrop. I would strongly recommend this.