There is Similar scenario of a cop obsessed with a serial killer. Also both have psycologists who study serial killers in the main cast. there is a fantasy element to tunnel, while mouse tries a more realistic approach. Tunnel dwelves into the worst and best of the human mind. And Mouse also looks promising. I believe we could expect a lot from the story. With lee seungi s acting talent, no matter which way his character goes, good or bad, I think he can do a good job.