According to game walkthroughs from Jay is Games and Big Fish Games :
In the hidden object game , "preparing paper" refers to a specific interaction within Case 5 (The Werewolf) . You must find and use paper to light a fire in the werewolf's lair to boil a potion. Steps to Prepare the Paper
Once the fire is lit, you place a on it and add a Potion to boil. Department 42: The Mystery of the Nine
You then use a (pot) to scoop the potion and give it to the werewolf to complete the mission. Department 42: The Mystery of the Nine - Jay is games
: Put the Paper on top of the wood in the fireplace. According to game walkthroughs from Jay is Games
This task is a necessary step to save a victim of a werewolf attack:
: Use the Matches from your inventory on the paper and wood to light the fire. Context within Case 5 You then use a (pot) to scoop the
: In the Lair scene, look for a Hidden Object (HOG) area. Completing this scene will reward you with the Paper item.