New Two Hour DATELINE NBC To Premiere Friday, Former DEA Agent Reveals Never Before Seen Footage Of Hunt For El Chapo

All-New "The Pink Gun Mystery" Airs Friday, April 6 at 9 p.m. ET/8 p.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: https://nbcnews.to/2JgoCjU

"Poison" Airs Saturday, April 7 at 9 p.m. ET/8 p.m. CT

Newlyweds Paul and Linda Curry come down with a mysterious illness. Paul recovers, but Linda is hospitalized and the strange symptoms won't go away. Josh Mankiewicz reports.

"Inside THE HUNT for El Chapo" Airs Sunday, April 8 at 7 p.m ET/6 p.m. CT

Former DEA agent Andrew Hogan comes out of the shadows to detail his search for EL CHAPO with never-before-seen videos and photographs of THE HUNT for the notorious drug lord. Lester Holt reports.

VIDEO PREVIEW: https://nbcnews.to/2GwDME6

ABOUT "DATELINE"

"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, Saturdays at 9 p.m. ET/8 p.m. CT and Sundays at 7 p.m. ET/6 p.m. "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.