Unforgettable Season 7 Episode 9, examining key evidence, family suspicions, and why the 2001 case remains unsolved ...

Travel from Maryland to Mexico to uncover the double life of an international fugitive wanted for murder in a new episode of ...

It took 15 years for the family of an American University professor Sue Ann Marcum, who was murdered in her Maryland home, to ...

Jorge Rueda Landeros awaits sentencing for the 2010 murder of professor Sue Ann Marcum, a case involving a staged burglary, ...

Follow the international manhunt for a mysterious man on the run. The all-new 20/20 “The Hunt for Mr. Right” premieres Friday ...

The show follows the work of officer Matt Hutchison of Sunnyvale, California, as he uncovers the facts in cold cases.

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 ...

— -- “20/20” investigates family mysteries sent in to ABC by viewers searching for their long lost family members. With the help of investigative genealogist Pamela Slaton, whose passion is ...

A dogged detective will stop at nothing to solve the murders of two young women in a new episode of "20/20" airing on Friday, ...