You hurry out of the tunnel, back the way you came. You are very careful about going through the door, and manage to get by without triggering the fire bolt.

The ghost's directions were good. You go to the barn after dark, leaving your lantern at home and using a tiny illumination spell to see by once you get inside the barn. You've brought along a sack to hold the bones, and a tiny bag to put a little bit of the treasure in. You'll come back later for more of it.

The body has completely decomposed, and the bones are clean, so it isn't too horrid a job putting them into the sack along with the clothing the adventurer wore. You scoop out enough gold coins and jewels to keep you in style for several months, and you carry both sacks well away from the farm, to a lonely old apple tree in blossom. There you bury the remains of the unfortunate adventurer.

The Swan Inn is no longer haunted by the troublesome ghost, and business eventually picks up again. You continue to go back to the pig barn and take the rest of the treasure, which is enough to keep you in comfort for the rest of your life, if you are careful with it.