There's nothing else in the room, so one letter keeps catching my eye. A letter you'll never send isn't a burden. It's a wall.

• MartaWould it be rude to ask who it's for?
  KlausThere's no one to receive it, so there's nothing to be rude to.
• Sir RoidenIf it can't be sent, burn it.
  Klaus...I couldn't burn it.