X-Men #9 (2011)

The X-Men, with Spider-Man's help, return to the depths of the Manhattan sewers to rescue the outcast teens that have fallen into the clutches of a mysterious menace. But Logan, Emma and crew are about to walk into a trap that strikes to the very core of their DNA, and the surprise villain pulling the strings is an all-too-familiar face! Can the X-Men save the innocents when they might not even be able to save themselves?