Classic fairy tales usually involve a plucky young child taking on something dark and dangerous that represents the unknown and coming out on top. Those tales have been told, retold, and ultimately sanitized over the generations. When you go back to the source, however, a disturbing pattern emerges. While the horrors they face are immense, the fairy tale protagonists turn into horrifying monsters themselves when the tale reaches its conclusion and they embark upon the most satisfying part of their journey: revenge.