 Scott didn't arrive in time to prevent the transplant of Cassie's heart (which caused the revived Darren Cross to shrink uncontrollably) and so Dr. Sondheim was forced to transplant another one in Cassie's body, with Scott slowing down her immune system enough to make sure it is not rejected.While Cassie survived, not knowing herself what had happened to her, Scott was so shaken up by that experience that he decided to leave her, reasoning that he cannot risk to put her in harm's way again and that she deserves a normal and happy life he cannot provide.A now depowered Cassie struggles with her everyday activities, while feeling frustrated by her current status; feeling resentful over Scott's seeming disappearance, she is later shocked and outraged to find out that he was secretly following her around, watching over her.