ABC officials recently reported that, on May 20, "Grey's Anatomy" sixth season will be staged two-hour finale.
  It is learned that an end is divided into two parts, each part of each hour. The first part of the "Sanctuary," in Seattle Grace Hospital will usher in an unprecedented crisis, but what this crisis is not now known; then the second part of "Death and All His Friends," Cristina and Meredith in the surgical technique will be facing unprecedented challenges .
   Seattle Grace Hospital will eventually happen? What exactly is the crisis of the so-called what? Then why is Cristina and Meredith's skills challenge? ABC indeed left us a lot of mystery, perhaps these questions can only stay until May 20 .