I watched this drama the most I watched 5 times . I liked it soo much the action I loved alot . The characters and the development of main character and his heroic advanture was amazing. It was the inquest action kdrama. The switch personality disorder was spot on and explained alot and the story was amazing and the detective actions evrything was spot on. Everyone's acting was amazing. I really wished for another season this is one of the best ever and will be forever. The music was very powerful too. I love this one the most