Gravity Falls - The Mailbox (Dipper's Guide to the Unexplained)

Seizoen: 0 - Aflevering: 3 / 3 - Eerst uitgezonden: 15 oktober 2013 - Episode ID: 829398

Dipper and Soos stumble upon a mailbox in the middle of the forest and make it their mission to discover who (or what) picks up the mail left inside.