Ultimate X-Men Vol. 4: Hellfire & Brimstone
Mark Millar (Writer), Adam Kubert and Kaare Andrews (Artists)
The world tour is over. It ended abruptly and tragically, with deaths and hard decisions. After returning home to Westchester, the X-Men carry on, seeking a return to normalcy and opening their school to students once more. But amid the mundane, Jean Grey's life takes a sudden turn toward the bizarre. Her mental barriers begin to erode as she starts to experience strange visions... like a giant bird composed entirely of flames. To save themselves - and the world - will the X-Men be forced to strike down their own teammate?
Ultimate X-Men #21-25