It's Spike's hatchday, and his friends are throwing him a party in Twilight Sparkle's castle. Spike and the other guests have no idea what's in store for them. The night turns horrid as the guests are trapped in the castle and systematically picked off, they must discover who the killer is or die trying.

Can you figure out who the killer is before the final chapter?

Be sure to stay out of the comments if you want to avoid spoilers.

* This story is part of my "Writing Goals" under Murder Mystery.