In order to defeat the reality warping mutant Proteus, one X-Men will have to commit the ultimate sin - murder! Don't miss the shocking conclusion to the saga of Mutant X!
Printed: Dec 1979
Writers: Chris Claremont and John Byrne
Art: John Byrne and Terry Austin
Cover: George Perez Terry Austin
Key Issue Details
- This issue is a Newsstand edition, most often found at pharmacies or general stores on wire racks.
