TL;DR: “20/20” kicks off its new season tonight, Friday, Sept. 25, at 9 p.m. ET on ABC with “The Salem Strangler,” a two-hour investigation into the 1986 murder of Salem State student Claire Gravel.

A new sneak peek at 20/20 Season 49, Episode 3 takes viewers inside a creepy abandoned house where a woman was found dead.

ABC News presents ' Dolly Parton: An American Original – Special Edition of 20/20,' led by 'World News Tonight' anchor David Muir, airing tonight, Tuesday, Aug. 25 (10:00-11:00 p.m. EDT), on ABC, ...

EXCLUSIVE: ABC News’ iconic 20/20 news magazine franchise is going international. Disney+ has greenlit the first ever non-U.S. version of the 50-year-old series and it will kick off in the UK next ...