Instructions
Take your thief along the east side of the enemy town, along the river. Look for a section of the wall that is made of wood.
Burn the wood section of the wall and enter the enemy city.
Move the thief to the storehouse and you should be able to enter it. Move carefully and in stages, avoiding enemy troops.
Exit the storehouse. You should see an arrow next to the thief. Click the arrow and a hand should appear. Click the hand and a larger hand will appear. Click the larger hand and the thief should receive a piece of paper, which has the information you need.
Return the thief safely to your castle.