He's been called "The Man Who Knew Too Much" -- Dr. Jeffrey Wigand, a top scientist for a top tobacco company, who became the first insider who blew the whistle on Big Tobacco: what they knew about the deadly addictiveness of nicotine, and how many millions of dollars they spent covering that information up.

It was the most notorious sex scandal of the 1980s: the arrest of Sydney Biddle Barrows--a blue-blood debutante, a descendant of the Mayflower, a name in the Social Register... and a Madam of a high-priced call girl service. William Shatner talks with Ms. Barrows to find out how a high-society dame found herself working the underground sex scene.

When 33 miners were trapped in a Chilean mine, a desperate call went out to Jeff Hart, asking him to assemble a team and fly 10,000 miles to Chile to save the men. Hart and his crew had spent their entire working lives drilling for oil and water, but now they were drilling to save lives.

When defense expert Daniel Ellsberg worked on a secret government study in 1969 about the Vietnam War, he realized that American leaders were lying to the public, they knew it was not a winnable war. Ellsberg decided to secretly copy the study and give it the nation's top newspapers. The "Pentagon Papers" became a national scandal.

When 18-month-old "Baby Jessica" fell down an abandoned well in 1987, the world was riveted by the efforts of the rescue team that included fireman Robert O'Donnell. But the overwhelming media attention left O'Donnell feeling hollowed-out and betrayed, and his life spiraled downward.

Ed Smart lived every parent's worst nightmare--the abduction of a child. But when Smart's 14-year-old daughter Elizabeth was kidnapped at knifepoint in 2002, the nightmare turned even more horrible when suspicion fell on Smart and his family themselves.