Two Steps from Hell

Spoilers for Dark Water. "With every step she took she felt as if she was two steps away from hell: the more she walked, the longer she had been on this planet, and the closer hell came." It's been revealed who Missy truly is, but how did she become the person we see now? With a voice promising heaven, but eyes of the devil. This is the story of how Missy came to be. One shot.