IN THE QUIET COUNCIL, NO ONE CAN HEAR YOU SCREAM! The Quiet Council rules the Krakoan age, for better... or worse. Now, shaken by INFERNO and X LIVES / X DEATHS OF WOLVERINE they strive to hold together, no matter how much they want to tear each other apart. Writer Kieron Gillen (UNCANNY X-MEN, ETERNALS, The Wicked + The Divine, Die) returns to the world of X with artist Lucas Werneck (TRIAL OF MAGNETO) to bring us all into the room where it happens. “It” being “the most powerful people on Earth deciding the fate of the whole planet.” Prepare for sinister secrets to be revealed and learn that some secrets are more sinister than others...

PUTTING THE "DIE" IN DIAMOND AGE! Hail the Pax Krakoa! Or perish! But to this hell age is born a hero. Say hello (again) to Rasputin IV...but what can one good chimera do in a universe of sin? The first century of Sinister's plan has come to an end…and whether it's better or worse may depend on the symbol on your forehead.

THE EXPERIMENT ENDS? Year 1 was the start of the experiment. By Year 10, it was filling a petri dish. By Year 100, it had cracked the glass and spread across the desk. Now it's been 1000 years, and the lab is filled by the writhing, pulsing sins of sinister and all the lab staff have been devoured. Everyone is in hell. The this includes Sinister.

In the culmination of years of planning, the devious Mister Sinister finally makes his move, and the X-Men are caught right in the center of it! From his vaunted position on the Quiet Council of Krakoa, Mister Sinister has plotted and schemed. Now, at last, his plans come to fruition beyond his wildest dreams...and his darkest nightmares! Can the X-Men survive the experience? Can anyone? Collects Sins of Sinister #1, Immoral X-Men #1-3, Storm & The Brotherhood of Mutants #1-3, Nightcrawlers #1-3, Sins of Sinister: Dominion #1.