At the "White Peaks" mountain

The mystery of "Night Walker" leads to Duncan Young as the suspect. The very same policeman that got shot in the spine while on his duty and ended him in wheelchair for the rest of his life.

And the society had a blind eye at him that he is now disabled, and he killed lots of teenagers to shared his pain for losing his youth.

"Detective, how does it feel to be the hero?" His voice calls out, in resentment and disgust as his face shows an unsettling smirk.