Through a rift in her prison, the Night Mare calls to Twilight. It tells her things she could not believe, yet senses are true. Will she fall under her spell, or will Celestia free Twilight from the Night Mare's control before it's too late?

There's a secret to this story if you can catch it. Do you know what it is? It's imitating the plot of Hamlet.
Source for picture is gone; have drawfriend instead: http://www.equestriadaily.com/2011/07/drawfriend-stuff-126.html #27.