This week's Death of X #1 finally brings with it the first answers about what actually happened between mutants and Inhumans in the eight-month gap between Secret Wars and "All-New All-Different Marvel." It also takes the first step toward the death of Cyclops, whose end may not have been as dramatic as his fellow mutants have made it seem.
Spoilers ahead for this week's Death of X #1.
Death of X #1 begins just as the Terrigen cloud is about to descend on Japan. Crystal and a team of Inhumans are inbound to aid anyone undergoing Terrigenesis. Simultaneously, Cyclops’s X-Men are descending on Muir Island, from which they’ve received a distress call. Both missions quickly go sideways, with the X-Men entering a deserted Muir Island facility only to find hundreds of deceased copies of Jamie Madrox.
Meanwhile in Japan, just as people begin to undergo Terrigenesis, the Inhumans are attacked by agents of Hydra attempting to steal the cocoons of nascent Inhumans. Crystal and her team fend off the Hydra agents with the aid of a newly birthed Inhuman whose powers put everyone who isn’t Inhuman to sleep.
At this same moment across the world, Cyclops is confronted by the original Jamie Madrox – said to be the last living mutant on Muir Island - who tells him his death was caused by the Terrigen cloud before dying in a sputtering, coughing fit. Madrox’s death of M-Pox is interesting, considering he was also one of the major casualities of the Legacy Virus in 1994's X-Factor #100 - although it was later retconned. Cyclops sends Madrox’s data to Beast, who seemingly confirms Madrox’s assertion about the Terrigen’s affect on mutants, but says he needs more research.
As Crystal and her Inhuman team wonder about the Hydra agents that attacked them, Cyclops tells his team that he has effectively declared war on the Inhumans - but not before falling unconscious, signaling that he too has what will be known as the M-Pox.
Death of X #2 goes on sale October 19.