Barbed Wire

Nico Di Angelo is sent on a mission with the seven, Clarisse, Katie, and the Stolls. They have one goal: help the Order and the Golden Trio defeat Voldemort. In almost any way possible. The only problem, something's wrong. Nico keeps doing strange things, and almost never remembers them. When he does, he won't say what or why, seemingly fine with the 'problem'. Clarisse and Connor know both what and why, but won't say a word. When they get to Hogwarts whatever is wrong with Nico seems to have spread. Will they find out what's wrong, or will it destroy their chances of winning? Or have our heroes finally snapped?