Amber's Lost Notebook Quest.
From Nostalther Wiki
Amber's Lost Notebook Quest
Legend
Some adventurer used to store his loot under a loose board in the stable to the north next to some strange note on the wall. He might have forgotten something when he left.
Dangers
Reward
Required Equipment
Nothing
Method
- Go down the ladder on the stables north from Tom's shop.
- Click the loose board.