The Last Will and Testament of Charles Xavier comes to a close in Uncanny X-Men #25

Professor X was hiding something; a mutant so powerful it could undo all the work he and his X-Men have ever done to try and help mutant/human relations. And now it’s loose.

This September, the secrets of the greatest champion for mutant/human relations come to light in the oversized UNCANNY X-MEN #25 – the shocking finale of The Last Will & Testament of Charles Xavier! Superstar creators Brian Michael Bendis & Chris Bachalo unearth a devastating secret of their former mentor that will send shockwaves through both camps of X-Men! What has Xavier been hiding? A mutant so powerful their very existence was a threat to mutant’s way of life. A destructive force so powerful they would’ve wiped out any chance of a peaceful coexistence between humans and mutants. An unstoppable power now unleashed in the wake of Xavier’s death! Against such overwhelming power, the splintered squads of X-Men must unite if they have any hope of stopping it. And the story of how it came to be will cast a new light on their beloved teacher – and the depths he would go to protect mutant/human relations. Witness Xavier’s final “gift” to his children, but will it be their undoing? Find out when The Last Will & Testament of Charles Xavier comes to its staggering conclusion in UNCANNY X-MEN #25!

The final piece of the puzzle in the X-Men’s corner of the Original Sin fallout, Uncanny #25 should be a ripper in just about every way. The X-Men of course, have had no shortage of secrets over the years, several of which have come back to bite them in the posteriors, but this one just might be the biggest with the most potential for havoc.