Kevin Sheehan, President and CEO of Norwegian Cruise Line, one of the world's largest cruise companies, finds himself in uncharted territory when he's asked to lead nearly 1,000 party-goers in a line dance.

The President and CEO of UniFirst, one of the nation's largest producers of workwear and uniforms, dons a "hippie" look during his undercover mission, where he finds himself struggling to keep pace with the fast-moving assembly line and is nearly injured.

When young starlet Christa Helm was found brutally stabbed to death on a West Hollywood street in 1977, there was no shortage of suspects. Police learned she kept a sex diary that mysteriously vanished after her death. Could the diary be the motive?

This story involves a young mother who disappeared one morning. Her husband said she went for a run.. and never came home. It was a puzzling case. It happened in a safe, suburban neighborhood.. the kind of place where crime is unexpected.

In the wake of the Great Recession, America's middle class emerges as the face of the new poverty. Lisa Ling travels the country to meet those forced by the aftershocks of the economic crisis to downsize their lives and reassess the American Dream.

Lisa Ling investigates the case of a teenage boy who was sentenced to 20 years in prison for touching a girl's breast - and is now a registered sex offender. Lisa will try to piece together what happened and find out: Did the punishment fit the crime?