Who Killed JonBenet?

The shocking murder of JonBenet Ramsey remains unsolved and dogged investigators continue to work the case -- looking at clues and tips to generate new theories about who killed her. A wide range of suspects are brought to light in this episode, including the Ramsey's housekeeper as well as the man who portrayed Santa Claus at a holiday party that she attended, days before JonBenet was found murdered.

Airs: March 3, 2017 at 8p ET

The full ransom note in the JonBenet case

Patsy Ramsey told police she found this ransom note on a staircase in her home before realizing her daughter was missing. Investigators said the note was unusual for several reasons:

"There were a number of things unusual about the note. Number one, the length of the note was very long, three pages," said retired Detective Fred Patterson of the Boulder Police Department to HLN.

"I've seen and worked a number of kidnappings for the FBI and most of the notes are very short, they’re very terse, very succinct and they give very specific instructions, almost like bullet points," retired FBI Special Agent Ron Walker told HLN. "I have never seen a ransom kidnapping that asks for such a specific amount of money: $118,000."

The 9-1-1 call the morning of JonBenet's death

"How it Really Happened" revisits the unsolved murder of JonBenet Ramsey. This is the entire 9-1-1 call made by her mother, Patsy, the morning JonBenet went missing.

Did an intruder kill JonBenet Ramsey?

In this clip from "How it Really Happened: Who Killed JonBenet?" Detective Lou Smit says evidence points to an intruder as the killer of JonBenet.

JonBenet ransom note still puzzles investigators

In this episode of "How it Really Happened: Who Killed JonBenet?" investigators find strange clues in the ransom note left at the home of JonBenet Ramsey.

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