Good work!  I haven't seen anyone tackle a Troll like that since Harry and Ron back in their first year.  Your next task is to capture Lupin.  He has changed into a werewolf, but has forgotten to take his potion and is dangerous.  For some reason he has not remained in his office or the Shrieking Shack, but has wandered into the Forest.  We need you to detain him, but be careful not to hurt him.  Good luck.