The Secret Life of 4, 5 and 6 Year Olds - All Episodes

Did you know that a brown bear became a war hero for the Allies during WWII? Or that a flying lawnmower once killed a spectator at a football game? What about the story of the 19th century doctor who ate vomit to understand how yellow fever is transmitted?

If you haven't, then brace yourself for The UnBelievable with Dan Aykroyd.

Each hour-long episode will open up our cabinet of curiosities to reveal the strangest-but-true stories in human history, brought to life through dynamic recreation, compelling graphics, and arresting archival. These seemingly tall tales all actually happened, and our cast of experts dives into the historical record to tell you how and why.

It's a bizarro barrage of people, places and events that prove just how weird our world can be.

A group of single black women from different walks of life navigate their complicated love life status, careers and friendship through the ups-and-downs of living in a modern world of social media and unrealistic relationship goals.

From the groundbreaking mind of MrBeast comes a new, record-breaking competition series. A staggering 1,000 players compete in nail-biting, physical, mental, and social challenges, for a chance to win a whopping $5 million dollar cash prize. Week by week, players will use their strength and wit to stay in the game, with the hope of being the multi-million-dollar winner.

20/20 continues to combine hard-hitting investigative reports, newsmaker interviews and compelling human interest and feature stories.

Seth Meyers, who is Saturday Night Live's longest serving anchor on the show's wildly popular "Weekend Update," takes over as host of NBC's Late Night — home to A-list celebrity guests, memorable comedy and the best in musical talent.

As the Emmy Award-winning head writer for "SNL," Meyers has established a reputation for sharp wit and perfectly timed comedy, and has gained fame for his spot-on jokes and satire. Meyers takes his departure from "SNL" to his new post at "Late Night," as Jimmy Fallon moves to The Tonight Show.