The humans that keep being displaced into Equestria don't know the rules of the Everfree very well. The local timberwolves are all too happy to educate them.
Legends tell of a ghostly, mysterious pony, dressed in black and carrying a raven on her shoulder. She is the hangmare, and she wll not rest until justice is served.
You've found an "interesting" book recently. You don't know what it is, or why it was hidden in the back of Twilight's library, but you feel so compelled to read it. And keep reading it. And keep reading it...
Shimmering Diamond Detective Agency receives another missing persons case. These rarely involves more than a few phone calls to find out the person just went no contact with the client, but this one's a bit different.
Scootaloo's been absent all weekend. Sweetie Belle and Apple Bloom grow increasingly anxious. Something's happened to their friend. Something awful. But what?
Rainbow Dash makes a bet, without understanding the dangers. Raven Inkwell discovers evidence of a secret, deadly crime. Both confront their sovereign, Princess Twilight Sparkle.
Things aren't going well for Twilight. Celestia seems to be upset with her, things are starting to make less sense, and she keeps seeing that face in the mirror.