True crime. Real justice. "48 Hours" is the one to watch on Saturday nights. 10 p.m. PT.: The Puzzling Death of Susann Sills: The wife of a fertility doctor is found dead at the bottom of a staircase.

"48 Hours" Live to Tell: A young girl plays dead to live through a shooting that destroyed her family. She describes her remarkable story of survival. Correspondent Erin Moriarty reports.