Dateline NBC To Air UNDER A FULL MOON On 12/21 & THE PINK GUN MYSTERY 12/22

Under a Full Moon Airs Friday, December 21 at 10 p.m. ET/9 p.m. CT

A Las Vegas cocktail waitress is found murdered in her home, leading authorities to wonder if there is a predator at large. Keith Morrison reports.

VIDEO PREVIEW

The Pink Gun Mystery Airs Saturday, December 22 at 9 p.m. ET/8p.m. CT

A complicated Texas love triangle ends in murder. A pink gun leads to an arrest, until new evidence prompts investigators to rethink the case. Josh Mankiewicz reports.

VIDEO PREVIEW

Dateline NBC is the longest-running series in NBC primetime history. Now in its 27th season,Dateline is anchored by Lester Holt and features correspondents Andrea Canning, Josh Mankiewicz, Keith Morrison and Dennis Murphy. Airing Fridays at 10 p.m. ET/9 p.m. CT, the #1 most-watched Friday newsmagazine reaches more than 18 million people every week through its broadcast, and millions more through its social media platforms. David Corvo is the senior executive producer, and Liz Cole is the executive producer. Follow Dateline on Facebook, Instagram and Twitter.