DATELINE NBC To Present BEFORE DAWN on 12/29, A COLD DECEMBER MORNING on 12/30, and UNDER THE PRAIRIE SKY on 12/31

"DATELINE NBC" TO PRESENT "BEFORE DAWN" ON FRI., DEC. 29, "A COLD DECEMBER MORNING" ON SAT., DEC. 30 AND "UNDER THE PRAIRIE SKY" SUN., DEC. 31

"Before Dawn" airs Friday, December 29 at 9 p.m. ET/8 p.m. CT

Newlyweds Seth and Lisa Techel are expecting their first child, but a shotgun blast shatters their dreams on Memorial Day weekend, 2011. Dennis Murphy reports.

VIDEO PREVIEW

"A Cold December Morning" airs Saturday, December 30 at 8 p.m. ET/7 p.m. CT

A mother of five is found dead in her Washington State home. But what leaves detectives the most shocked is the way she is found. Keith Morrison reports.

VIDEO PREVIEW

"Under The Prairie" airs Sunday, December 31 at 7 p.m. ET/6 p.m. CT

When a mother of three mysteriously disappears, the only clue is her abandoned vehicle on a lonely Montana highway. Josh Mankiewicz reports.

Dateline is the longest-running series in NBC primetime history. In its 26th season, Dateline is anchored by Lester Holt and features correspondents Andrea Canning, Josh Mankiewicz, Keith Morrison and Dennis Murphy. Airing Fridays at 9 p.m. ET/8 p.m. CT, Dateline reaches more than 20 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.

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