Ancient Civilizations - Season 4

Beyond the Gates is set in a leafy Maryland suburb just outside of Washington D.C., and in one the most affluent African American counties in the United States. Here you'll find a posh gated community with winding tree-lined streets and luxurious mansions to call home. At the center of this community are the Duprees, a powerful and prestigious multi-generational family that is the very definition of Black royalty. But behind these pristine walls and lush, manicured gardens are juicy secrets and scandals waiting to be uncovered. And those that live outside these gates are watching closely. These are the places where our characters live, love, work and play. Those who have "made it" and those who haven't are all trying to navigate life … and some with more grace than others.

Big Brother follows a group of people living together in a house outfitted with dozens of high-definition cameras and microphones recording their every move, 24 hours a day. Each week, the Houseguests will vote someone out of the house. At the end, the last remaining Houseguest will receive the grand prize of $500,000.

Some of The Bachelor's biggest stars and villains are back. They all left The Bachelor or The Bachelorette with broken hearts, but now they know what it really takes to find love, and on Bachelor in Paradise they'll get a second chance to find their soul mates. Contestants will live together in an isolated romantic paradise in Mexico and explore new romantic relationships.

Under Salt Marsh is set in the fictional Welsh town of Morfa Halen, a tight-knit community precariously nestled between towering mountains and a fast-encroaching sea that threatens its very existence. As a once-in-a-generation storm begins to gather far out at sea, former detective turned teacher Jackie Ellis discovers the body of her 8-year-old pupil, Cefin, seemingly drowned. The discovery sends shockwaves through the community, reviving the ghost of an unsolved cold case that rocked the town three years prior – the disappearance of Jackie's niece, Nessa, which cost her career.

Cefin's death summons Jackie's former partner, Detective Eric Bull, back to Morfa Halen to lead the investigation into a community he failed once before. Convinced the cases are linked, Jackie and Bull must reconcile and race to uncover long-buried secrets inside Morfa, before the storm breaks and all the evidence is gone for good. An intimate and cinematic story, Under Salt Marsh takes audiences into the heart of a community bound by nature and fractured by an unthinkable crime.

History's Greatest Mysteries will investigate a wide range of historically compelling topics and the mysteries surrounding each including the Titanic, D.B. Cooper, Roswell, John Wilkes Booth, and more. Each program within the franchise will showcase fresh, new evidence and perspectives including never-before-released documents to the general public, personal diaries and DNA evidence to unearth brand-new information about these infamous and enigmatic chapters in history.