This issue, an X-Man dies!
They didn't use that cover line, as they didn't want to give it away, but at the risk of spoiling something thirty five years old, One Comic spends some time with the issue that gave the world the (first) death of Jean Grey: Uncanny X-Men 137. Double-sized and ending a story years in the making, this is one of the most famous Marvel comics of all time. But how does it hold up? And how much difference does the editorially-mandated change to the ending make?
And to round things out, we consider the best and worst of the X-Men retcons - mostly the worst, because they're all pretty bad.