He Must Live To Tell

He ends up in a medcare facility in Boston, unconcious. It was no hit-and-run accident, as Nurse Paige was previously told. Someone wants him murdered, dearly. He finally opens up his eyes, much to her delight but he remembers nothing, not even his own identity. After hours of jogging his memory he spits out this weird name - Sophie. But how much time does Nurse Paige have to figure out who is Sophie, when there's a ruthless killer on the loose, determined to finish his job?