Dipper's Guide to the Unexplained - Mailbox
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.
Cast
Jason RitterDipper Pines (voice)
Kristen SchaalMabel Pines (voice)
Alex HirschGrunkle Stan / Soos Ramirez / Bill Cipher / Old Man McGucket (voice)
Linda CardelliniWendy Corduroy (voice)
Gravity Falls on tvt
