An MLP/Amnesia crossover story.

Twilight Sparkle wakes up in a dark castle, with no recollection of how she got there. Disturbed by her lack of any memories, she explores the castle to try and find out just what is going on. Unfortunately, strange events begin to occur. Doors open on their own, candles go out, and Twilight can't shake the feeling that she's being followed. Will she be able to elude the nightmare and get her memories back?