Walking together seemed so very familiar. It predated the war. How many times had they done it, hidden under the invisibility cloak. It had gotten tight as they grew older and then it was just easier for James and Sirius to use it, while Remus was a prefect and he could turn into a rat. However, that wasn't that important.
"How the hell did it get here?" Peter asked at the same time, while he started to think about what they had learned about trolls. "It's a mountain troll, eats people, most aggressive, did I mention that he eats people, also why is he not in a mountain?"
The troll finally seemed to register their presence and began to run toward them, steps echoing against the stone walls. Peter moved in front of James, thinking about the right spell. He knew a simple spell wouldn't do it and then he remembered what to use. "Ebublio!" The troll became engulfed in a very large bubble that could not be popped by physical force. The troll screamed in frustration, while Peter turned to look at James. "What do we do with this now?"