The Uncanny X-Men #489

In "The Extremists Part Three," Masque’s terror campaign escalates as he unleashes a horrifying message targeting humanity, forcing Storm to enlist the Human Torch and the Thing in a desperate hunt for the Morlocks. When Sentinel Squad O*N*E arrives first, they’re slaughtered in a brutal ambush, leaving the X-Men to confront the aftermath—and Skids, the sole survivor, who shocks them by revealing she’s not a Morlock but an SHIELD agent embedded in their ranks.

In the wake of the Neverland mutant concentration camp’s devastating loss, Beast finds himself confronting his Age of Apocalypse counterpart—Dark Beast—over the ethics of survival. Forced into an uneasy alliance, the two mutants must navigate dangerous moral terrain as they pursue a solution to the growing mutant crisis, with no clear path to what comes next.