Alexia Prince

That's the question on the mind of 3/4th of the Marauders. After being beaten up by a masked girl they think that they won't have to worry about the girl bugging them again and they can tease Severus all they want. But when they see a new prankster has arrived at Hogwarts and they recognize her as the girl in the mask how far will the go to find out who she is?