Ultimate X-Men Vol. 9: The Tempest
By Brian K. Vaughan.
Description
Professor Xavier--the mentor of the X-Men--is forced to confront his past sins when his own son explodes into a destructive force, and Jean Grey turns to the dark side, forcing the team to strike down one of their own in order to save themselves and the world. Original. - from Amzon
ISBN(s)
0785114041, 9780785114048