You are just a normal serial killer – well, at least as normal as they can get. You just plunged your knife into your victim's chest, blood pouring out in a fatal manner. His heart beat no longer.

The last thing you expected tonight was him to come back from the dead. You hear a groan, as the pale-faced man sat up from his lying state.

"Did you just… stab me?"

He sounded unfazed, despite his bloody condition, but also a bit offended. How was this possible?