A mother's unwavering crusade for justice for her daughter's murder leads to the hidden clue that helped catch a killer in a new episode of "20/20" airing on Friday, January 30.

A teenage musician is murdered in her home and another young woman is attacked nearby in a new episode of "20/20" airing on ...

20/20 (9 p.m., ABC) - 20/20 has the story of Nicholas McGuffin, who spent almost 10 years in prison for the 2000 murder of his former girlfriend, Leah Freeman, before the conviction was overturned.

LOS ANGELES -- In a special edition of "20/20," ABC News Studios pulls back the curtain to reveal the magic of Disneyland as it celebrates 70 years of happiness in "The Happiest Story on Earth: 70 ...

Mr. Cook has chosen to breach the confidentiality agreement in the divorce settlement, a provision agreed upon in court to protect the children and allow them to put this ordeal behind them,” the ...