Monsters

Cathry pairing, when Henry drugs Catherine in "Monsters" what if he realized what he's done? What if it turned into Cathry? What if Penelope got what was coming to her? Well guess what we're going to find out.
Rated T for violence
Disclaimer: Nope still don't own Reign, if I did Cathry would have had one of those fairy tale Disney spins where Henry twirls Catherine around while she's all giggly.