Art by Adam Kubert
Uncanny X-Men #375 (12/99) - The team reconverges at the mansion, having all heard of the death of Wolverine. Tensions grow high, and soon the X-Men are fighting among themselves...ultimately killing one another. It is soon revealed that this fight scenario is fake, and that it was all an illusion planted in their heads to keep them busy while the Professor probed their minds to determine their loyalty to the team. The Professor had suspected for some time that there was a phony X-Man among them, and he needed time to find out who it was. When the autopsy is performed on Wolverine, it is revealed that he is the actual phony...a Skrull! The real Wolverine is still missing.