Chris Hansen and Dateline's hidden cameras go on the trail again – this time to South Carolina – to track down and confront the people behind a common e-mail scam.

Watch sneak peek videos here.

Watch it Sunday at 7 p.m. ET, 6 p.m. CT on NBC.

 

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Keith Morrison reports on the puzzling and tragic murder of a college student, Michelle O'Keefe, who was found gunned down in her car, and her family's and a detective's decade-long quest for justice.

Watch "The Man Who Knew Too Much" on a special two-hour Dateline NBC, starting Friday at 9 p.m. ET, 8 p.m. CT.

You've seen him in action on the Vegas Strip. You've seen him confronting crooked lottery clerks. But this time, it's no crime: Get ready for something totally different from Dateline's Chris Hansen. It's an all-new reality show, called "What a Pain!" -- and it's totally fake! The idea is to test reality-wannabe contestants to see how far they'll go. Would they deliberately hurt someone else just because they're told do? Or, how about this: An enclosed room fills with smoke. Would people bolt for the door or sit tight for more?

You're going to be surprised at the shocking things people can be persuaded to do. Join Chris Hansen for "What Were You Thinking?"

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Join us Sunday at 7 p.m. ET, 6 p.m. CT for Dateline NBC.

A wealthy executive is gunned down in his home.  His former in-law charged with the murder.  But what really made national news was the suspect's defense:  he said he was too fat to have killed. But would the argument -- and the science behind it -- sway the jury?  Dateline NBC's Dennis Murphy reports.

After losing control at the wheel, a loving mother dies.  Her death would shatter what everyone thought was a perfect family life - especially after her husband mysteriously disappears and his double life is exposed.

See it this Friday at 9 p.m. ET, 8 p.m. CT.

It was once the heartbeat of the American economy, but today, Detroit could be seen as the ultimate reflection of America's pain. The population - once two million - is now less than half of that; the schools are among the worst in the nation, crime and corruption run rampant, and people are struggling to survive in a shattered economy. In Chris Hansen's upcoming report, "America Now: City of Heartbreak and Hope," Hansen, who grew up in the Detroit suburbs and worked as a reporter in the city for a decade, returns to take a very personal look at what's being done to save the city, and the people who are leading the way.

Visit msnbc.com for breaking news, world news, and news about the economy

See it Sunday, April 18 at 7 p.m. ET, 6 p.m. CT.

Fresh from a break up, a young, beautiful woman is trying to start her life over in the tropical Norfolk Island off of Australia when she disappears in broad daylight. Dateline NBC's Sara James reports on the Agatha Christie-like mystery that ensues.

Marking the fortieth anniversary of Apollo 13, NBC's Matt Lauer reports on the real story and the real people behind the words "Houston, we've had a problem." Hear in their own words how the crew of Apollo 13 found themselves in a struggle of survival against all odds that lasted for six days when an explosion crippled their spacecraft.

Visit msnbc.com for breaking news, world news, and news about the economy

From Lindsay Lohan to Paris Hilton, Dateline NBC's Josh Mankiewicz takes a look at a series of late-night burglaries caught on tape at the homes of young Hollywood celebrities, allegedly committed by a group now known as the "Bling Ring."

Also: A charismatic pastor's demons are exposed when a crime hidden for years is revealed. Josh Mankiewicz reports.

It was once the heartbeat of the American economy, but today, Detroit could be seen as the ultimate reflection of America's pain. The population - once two million - is now less than half of that; the schools are among the worst in the nation, crime and corruption run rampant, and people are struggling to survive in a shattered economy. In Chris Hansen's upcoming report, "America Now: City of Heartbreak and Hope," airing on Sunday, April 18 at 7 p.m. ET, Hansen, who grew up in the Detroit suburbs and worked as a reporter in the city for a decade, returns to take a very personal look at what's being done to save the city, and the people who are leading the way.
 
The hour-long report is told through the eyes of Cordette Grantling - a woman who takes in abandoned children and whose story reveals what it takes to survive day-to-day in Detroit. Hansen and his team not only embed with Cordette, but also shadow the city's police chief, who twice a week hits the streets himself to tackle the city's high crime rate. Hansen visits some of the city's troubled schools to see if there is anyone who can get the upper hand on violence and corruption. In addition, a Detroit insider talks candidly to Hansen about what he calls the city's "culture of corruption," ironically he's under indictment himself.
 
As dire as the situation is in Detroit, there are many who believe that the city will survive and rise again, including musician Kid Rock and Detroit Mayor Dave Bing. Bing, a former NBA star and successful businessman, is stopping at nothing to rebuild and re-imagine his city, telling Hansen, "the day of reckoning is here," and how he plans on leveling thousands of homes and buildings and literally downsizing the city.