• The original X-Men take on the Brotherhood of Evil Mutants, mutant-controlled Sentinels, Angel’s evil uncle Burt, the long-lost Yeti, Kraven the Hunter and the mysterious mutant group the Promise – and it all concludes in a seamless ‘crossover’ with a classic Lee/Kirby/Romita FANTASTIC FOUR tale!

• Plus: The original version of that FF saga, featuring the menace of Magneto and the Sub-Mariner! And the classic Atlas Era and Silver Age appearances of the Promise!

• Collecting X-MEN: THE HIDDEN YEARS #13-22, FANTASTIC FOUR (1961) #102-104, and material from YELLOW CLAW #2 and AMAZING ADULT FANTASY #14.