Of all the thriller kseries i have watched, the best one so far. Right from episode 1 till 13 it never seizes to amaze you and go woah and omg with its plots and twists. Each episode has only kept me hooked up to the next episode. Started with the 1st epsisode and didnt wanna stop until i reached all 8 (as the rest werent released yet) and wow it make me more anxious and curios about the upcoming episodes. Still going great. Not a single scene or episose has bored me yet.... The rating is too low for this series. It definitely deserves a 10. The fitsr series of Lee Seungi that im watching and already love this series be ut Ko Moochi or every characters in this series.... its just soo good