Sue Marcum was found dead in her Maryland home in 2010.

Matt Hutchison, the "badass detective," has made arrests in many cold cases.

A young mother brutally murdered. What secrets do her ex-boyfriend & his new fiancée hold? The new “20/20” premieres on a special night: Wednesday, Dec. 17 at 10/9c on ABC. Stream on Disney+ and Hulu.

Two decades-old Sunnyvale cold cases are finally solved through DNA and genealogy in 20/20: Badass Detective, spotlighting ...

20/20: The After Show – The Last Strike| Podcast John Quiñones details how he and his team defrosted after facing bitterly cold snow while reporting on the chilling murder case and love triangle that ...

Trailer: 20/20 Special ‘Avatar: A New Era’ - premieres Dec. 12th at 10/9c on ABC Go inside the world of 'Avatar' with James Cameron, Zoe Saldaña, Kate Winslet, Sigourney Weaver, Sam Worthington and ...

Generated by create next app Man convicted in killing of young Texas mom speaks out in '20/20' prison call In an exclusive new interview with "20/20," Andrew Beard apologized for his "despicable and ...

Trailer: 20/20 'Badass Detective' - Premieres Jan. 9th on ABC. Walk alongside one fearless detective who will stop at nothing to solve two high stakes murder mysteries. 20/20's 'Badass Detective’ ...

Generated by create next app Trailer: 20/20 ‘Ride or Die’ - premieres Dec. 17th at 10/9c on ABC A young mother brutally murdered. What secrets do her ex-boyfriend & his new fiancée hold? The new ...