
'Days of Future Past' is one of the most highly regarded, most well-known X-Men stories of all time, and now, for the 60th anniversary of the mutant team's 1963 debut, Marvel Comics is revisiting the future timeline of the classic tale to fill in some of the blanks of the story with a four-issue limited series titled X-Men: Days of Future Past - Doomsday.
Originally told in just two issues, 1981's Uncanny X-Men #141 and #142, 'Days of Future Past' focuses on a future where mutants have been hunted nearly to extinction, with Kitty Pryde going back in time to attempt to prevent her own reality from coming to be.