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| Publisher |
Marvel |
| Artist |
Walt Simonson |
| Writer |
Louise Simonson |
| Published | March 1989 |
"Duet!" The madness of the Inferno continues! Madelyne vs. Marvel Girl! Madelyne Pryor's mysterious past revealed! The final fate of the Angel! In this giant-sized conclusion to the saga begun in Uncanny X-Men #242, will the X-Men and X-Factor emerge as friends--or as bitter enemies? SPOILERS Final showdown between Jean Grey and Madelyne Pryor