Seventeen-year-old Benjamin Elliott fatally stabs his twin sister, Meghan, in the middle of the night – a crime with no known motive and an act his defense claims he committed while sleepwalking. "48 Hours" correspondent Erin Moriarty reports.

For years, Kenneth Fandrich told everyone he knew that he was being stalked by the nicest man in town. In 2023, after his wife calls 911 to report her husband missing, police discover his lifeless body in his car, parked inside a corporate parking garage. "48 Hours" contributor Natalie Morales reports.

After her husband, Kevin Davis, 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.

Joe Shymanski was gunned down in the driveway of his Calvert County, MD, home in 2023. Now his niece mourns her uncle's murder and questions whether the convicted killer was the only one involved. "48 Hours" contributor Nikki Battiste reports.

Robin Lawrence was home alone with her 2-year-old daughter in Springfield, VA, when an unknown killer murdered her. Her toddler was left to fend for herself for two days until Robin’s body was discovered. Nearly 30 years later, cold case detectives uncovered a surprising suspect. "48 Hours" correspondent Anne-Marie Green reports.

A beloved doctor, his wife, and their young daughter are murdered, leaving their Santa Barbara, California, community reeling. A suspect emerges with a fantastical story of shadowy figures and intrigue straight out of a spy thriller.

A detective hunts for answers when a woman goes missing. For Tracker Black it's personal. "48 Hours" correspondent Peter Van Sant reports. 

A stalker sends menacing messages to a young mother before she is murdered. The investigation reveals a sinister setup.

With her sister's murder long unsolved, a woman turns to TikTok pleading for leads. Can you help?