Make-or-break moments in presidential debates

As Joe Biden and President Donald Trump prepare for a high-stakes presidential debate, ABC takes a look back at the top make-or-break moments from past contests.

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The List: Who Killed JonBenét?l 20/20 l PART 5

The List: Who Killed JonBenét?l 20/20 l PART 5

JonBenet Ramsey's parents deny involvement as police investigate the murder: Part 5 Authorities investigated John and Patsy Ramsey's possible involvement in their daughter's death. Neither had a history of abusing or neglecting their children. #AB...

The List: Who Killed JonBenét?l 20/20 l PART 4

The List: Who Killed JonBenét?l 20/20 l PART 4

JonBenet Ramsey is buried in Georgia as case garners global media attention: Part 4 The child's death came on the heels of the O.J. Simpson trial. Police were unable to secure a formal interrogation with John and Patsy Ramsey, who appeared on CNN ...

The List: Who Killed JonBenét?l 20/20 l PART 3

The List: Who Killed JonBenét?l 20/20 l PART 3

JonBenet Ramsey's father finds her dead in their basement: Part 3 John Ramsey found his daughter's body after a detective asked him to look around. She had a fractured skull but died from strangulation. Police suspected her parents were responsibl...

The List: Who Killed JonBenét?l 20/20 l PART 2

The List: Who Killed JonBenét?l 20/20 l PART 2

JonBenet Ramsey's parents report a kidnapping, police search home: Part 2 JonBenét's parents initially thought she'd been kidnapped because they'd found a ransom note asking for $118,000, the same amount as dad John Ramsey's work bonus, which auth...

The List: Who Killed JonBenét?l 20/20 l PART 1

The List: Who Killed JonBenét?l 20/20 l PART 1

The search for JonBenet Ramsey's killer continues 24 years later: Part 1 The 6-year-old beauty queen was assaulted and murdered on Christmas night in 1996. The family of an investigator in the still-unsolved case is trying to fulfill his dying wis...

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