This July, the X-Men crash headlong into Original Sin in Uncanny X-Men #23 - from New York Times Bestselling writer Brian Michael Bendis and rising star artist Kris Anka! Thanks to the events of Original Sin, Charles Xavier's last will and testament has been discovered. The final wishes of a man who fought all his life for peaceful coexistence between man and mutant - until the very day it got him killed. The rift between the two X-Men squads grows with each passing day. Do the secrets contained in Xavier's will have the power to finally reunite them? Or doom them forever? Don't miss the story that will have everyone talking and sets the stage for huge X-Men stories on the horizon when The Last Will and Testament of Charles Xavier stands revealed in Uncanny X-Men #23!