Early on the Dawn of X era of X-Men, the Jonathan Hickman-written X-Men series sent a small, specialized squad of X-Men, under Wolverine’s leadership, into the Vault. There, they were to gather information and potentially disrupt the operations of the Children of the Vault — past enemies of the X-Men and all mutants. It was to be a quick job, but time flows differently in the Vault. Even taking that into consideration, the team went missing long enough that the rest of the mutants suspected something had gone wrong. Now, the latest issue of X-Men reveals what exactly befell Wolverine’s X-Men squad. SPOILERS for X-Men #18 by Johnathan Hickman, Mahmud Asrar, and Sonny Gho follow.