 Dr. Fascinella tells Cutter that the woman he just examined isn't Stacy but the woman that she based her altered looks on, which was her sister Gigi.Cutter figures out that "Stacy" was really Gigi, and that she was the one that really survived being trapped in that contaminated and toxic basement, and that Stacy was the one that really died and her heart was donated to Clint.Cutter still made Gigi think she was Stacy by saying that she could not have the surgery because of the toxic fumes she was exposed to.