LATER on a special edition of Nightline at 12:05 am ET/11:05 CT... we talk to Vanessa Guillén's family and their attorney @WhistleblowerLF... what changes they're pushing for in the military following Vanessa's death. John Quiñones reports. #IAmVanessaGuillen abcn.ws/391Zsmg

TONIGHT, 9:30p on ABC News: Katie Couric and People Magazine talk the top headlines from 2012 - Check out #TheYear in Royals! abcn.ws/V7hTXn

Love can make us do some crazy things - but calling in a plane bomb hoax? The lies gone too far - tonight on #2020FakingIt at 10p on ABC News

See more of Diane Sawyer's #HiddenAmerica tonight on Nightline

A Former Navy Seal Reveals How to Survive Almost Any Disaster to our Gio Benitez tonight on 20/20. Watch preview abcn.ws/178sVWA

Houses demolished by mistake! How can this happen? Plus, the frustration when victims try to get compensated. TONIGHT on 20/20 at 10pm ET

Want to know how to get your luggage safely to its destination? A piece I produced for #abc2020 reveals the secrets!Tonight at10pm ET.

#ABC2020 is on a journey–swabbing movie theaters across the land. What’s going on in those dark rooms…off the silver screen? Tonight 10/9c

Tonight on 20/20 - The heartbreaking story of a couple hoping to adopt who was scammed by a woman pretending to be pregnant - 10/9c.

Tonight: David Muir meets a brave 12-year-old girl who survived the unthinkable & whose smile you’ll never forget. #2020OutoftheWoods, 10/9c

Tonight: Using tracking equipment, Gio Benitez confronts thieves with sticky fingers abcn.ws/1ynkdOh - See more on #ABC2020 - 10/9c

.David Muir is at Vatican as Pope Francis holds virtual audience w/Americans #AudienceWithPope abcn.ws/1fRxR9V

"Pope Francis & The People" moderated by David Muir is on 20/20 TONIGHT at 10|9c ! #AudienceWithPope

WATCH: Killer's performance in musical hours after murdering two people. Full story tonight on 20/20 at 10pm ET abcn.ws/1OVmDv6

Does your child have a digital addiction? abcnews.go.com/2020/mailform?…

Newspaper ad announcing the premier of 20/20 our ABC News newsmagazine 38 years ago this week.

What happened to Chandra Levy? The story that stunned the Nation – TONIGHT on 20/20 at 10/9c

An inspirational hour documenting three brave families' struggle with digital use from crisis to hope starts now 20/20

Watch our emotional 20/20 program about extreme digital usage from crisis to hope w/ Elizabeth Vargas for free here: abc.go.com/shows/2020/epi…