NOVA: Why Trains Crash

Legendary journalist Gay Talese unmasks a motel owner who spied on his guests for decades. But his bombshell story soon becomes a scandal of its own.

Police pull over a woman who claims she just gave birth. But the baby — and the blood — aren't hers. Twisted lies unravel in this true-crime documentary.

Investigators reveal how Boeing’s alleged priority of profit over safety could have contributed to two catastrophic crashes within months of each other.

Through deeply personal interviews with her siblings and an examination of the photographs, letters, and belongings left behind, Mariska assembles a new portrait of her mother Jayne Mansfield, an extraordinary and complex woman.

JB Smoove and Martin Starr host a celebration of 20 years of "Spider-Man" movies, from the Sam Raimi trilogy to Marc Webb's movies and the trio from Jon Watts.

A detailing of the rise to prominence and global sporting superstardom of six supremely talented young Manchester United football players (David Beckham, Nicky Butt, Ryan Giggs, Paul Scholes, Phil and Gary Neville). The film covers the period 1992-1999, culminating in Manchester United's European Cup triumph.

A documentary focused on plastic pollution in the world's oceans.

This revealing documentary honors the legendary Sidney Poitier—iconic actor, filmmaker, and civil rights activist. Featuring interviews with Denzel Washington, Spike Lee, Halle Berry, and more.

Documentary filmmaker Amy Berg investigates the life of 30-year pedophile Father Oliver O'Grady and exposes the corruption inside the Catholic Church that allowed him to abuse countless children. Victims' stories and a disturbing interview with O'Grady offer a view into the troubled mind of the spiritual leader who moved from parish to parish gaining trust ... all the while betraying so many.

The Crash Reel tells the story of a sport and the risks that athletes face in reaching the pinnacle of their profession. This is Kevin Pearce’s story, a celebrated snowboarder who sustained a brain injury in a trick gone wrong and who now aims, against all the odds, to get back on the snow.