When an Army nurse disappears, investigators discover a tangled web of lies and deception in a new episode of "20/20" airing ...

Two key witnesses now say they lied about the murder of a young mother in a new episode of “20/20” airing on Friday, October 24. ABC News’ “20/20” is an award-winning primetime program anchored by ...

The boss of the ABC’s flagship news program has resigned, though the broadcaster says the decision is unrelated to an investigation into one of its top reporters.