48 Hours

A teenager stabs his sister – a crime with no known motive. His defense says he was sleepwalking. "48 Hours" correspondent Erin Moriarty reports.

After her husband is found dying at the foot of the stairs, a woman accused of murder fights to clear her name. "48 Hours" correspondent Peter Van Sant reports.

A young woman mourns her uncle's murder … and questions whether the convicted killer was the only one involved. "48 Hours" contributor Nikki Battiste reports.