Not At Home - The expedition is trapped in the secret passage for several days. The group realizes Smaug has disappeared from his lair and sends Bilbo Baggins out to explore the situation. Bilbo finds the fabled Arkenstone and conceals it as his share of the treasure. Thorin also gives Bilbo a chain mail coat created by the elves. The dwarves explore the treasure and finally occupy an old watchman's tower to detect Smaug's return.