48 Hours

48 HOURS launches its 38th season with the case of 17-year-old Benjamin Elliott, who stabbed his twin sister - a crime with no known motive. His defense team says he was sleepwalking when he killed her.

A wife calls 911 to report her husband missing. Police then discover his lifeless body in his car, parked inside a corporate parking garage. The first clues to solving the mystery come from the very cameras the killer tried to cover up. Security footage shows a masked man in a yellow hard hat carrying a can of blue spray paint, attempting to conceal his crime. 

After her husband is found with a fatal injury at the foot of the stairs, a woman is accused of murder and fights to clear her name. Alison Davis says she woke up to find her husband, Kevin, critically injured, and she insists he fell down the stairs. But police say an autopsy revealed inconsistencies that led them to a different conclusion. Alison Davis always maintained her innocence and was in the fight of her life to defend herself. 

A young woman mourns her uncle's murder and questions whether the convicted killer was the only one involved.

A gifted artist is murdered in her home; decades later, her killer reveals what drove him. Her toddler is left at the crime scene to fend for herself.

The murders of a beloved doctor, his wife and their young daughter leave their Santa Barbara, Calif., community reeling; a manhunt leads to the arrest of a suspect who prosecutors say is a conman.

When a young mother goes missing, trained tracker and detective Dakota Black launches an investigation that locates the murdered woman.

A stalker sends menacing messages to a young mother before she is murdered. The investigation reveals a sinister setup. In this week's 48 HOURS, correspondent Peter Van Sant reports on how law enforcement unraveled the case, including why a person of interest believes the spirit of the victim gave him "the urge" to buy a sweatshirt that ultimately helped clear his name.