X-Men5 books in series
X-Men: Smoke and Mirrors Publisher's Summary
The X-Men are mutants—born with extraordinary powers that set them apart from the very humanity they are sworn to protect. Now, groundbreaking research has revealed a method for reversing the genetic mutation responsible for mutant powers—whether the mutant wants it reversed or not.
The US government wants to use this procedure to eliminate the so-called mutant menace once and for all—but the X-Men soon learn that the true source of the procedure is their old enemy, Sinister! And his agenda is far more complex and dangerous than even the X-Men can imagine.