The Mutant Massacre is the first-ever crossover X-Event! The Mutant Massacre was an epochal event in comics, confirming once and for all that Uncanny X-Men was the cutting edge of comics action and drama. It begins when the Marauders go on a savage hunt for Morlocks - and they don't mind slaying any X-Men who get in the way. Future X- Legends Psylocke and Longshot get their feet wet as members in good standing, while Wolverine has his first legendary battle with the vicious Sabretooth. Plus: The X-Men take on the Avengers and the Fantastic Four! Written by Chris Claremont and a cavalcade of Marvel's top artists, including John Romita Jr., Marc Silvestri, Alan Davis and Barry Windsor-Smith, some of the most Epic X-Men stories ever! Collecting: Uncanny X-Men (1981) #211-219, Spider-Man vs Wolverine (1987) #1, Fantastic Four vs X-Men (1987) #1-4, X-Men vs Avengers (1987) #1-4