*THE SECRET ORIGIN OF SARA GREY
Protecting the cosmos as Phoenix, Jean Grey has experienced near-limitless mystery and wonder — a universe of perpetual possibility! But nothing so magnificently unexpected as this: her sister, Sara Grey, has returned to life. Murdered by the Phalanx many years ago, another in a long line of Greys to lose their lives in untimely, violent ways, Sara nonetheless stands before Jean, alive and well. But — when?! Why?! How?! All of these are questions worth asking. And Jean Grey probably should. Needless to say... this would be a very different story if she did.
*Source: marvel.com