chunk: Upon making bail Berlin returns to Margie's house only to learn that Margie has taken Helena back to the institute. Fearing that Helena and Margie are in danger, Berlin rushes to the institute, but fails to arrive ahead of the killer, who breaks in and chases a woman he believes to be Helena through the dorm. Finally catching up to her, the killer is shocked to discover that the woman he'd been pursuing is actually Margie, who shoots him dead, avenging her husband and closing the case.