After Zoom reveals his true plan, Barry vows to do whatever it takes to stop him.
Matt Preston and Nigella Lawson arrive at the contestant house in the middle of the night as the three best from Nigella's invention test are asked to create a midnight snack for a chance at immunity.
Gordon visits a lodge in Idaho that was built by the owner's own hands before the entrepreneur lost his passion due to a family tragedy.
Root goes undercover at a radio station to protect the host of a conspiracy theory show who stumbles upon information that could get him killed. Also, Samaritan’s agents try to convince a member of the team that their goals are noble.
As life returns to normal, Lex moves forward with to try and reveal the truth about a possible government cover-up.
Against Vera's wishes, Ferguson is released into general. The women are out for blood but Vera confines Ferguson to her cell for safety reasons. When Ferguson challenges Vera's decision, she's left bewildered and wondering whether Ferguson has a death-wish. As always, Ferguson has an endgame but will she live to accomplish it?
Hitler planned a submarine to outperform all others. The Type 21 was the world's most advanced submarine: Hitler's sea-faring super weapon.
Heimo still needs a moose; the Seldens embark on the next part of their trapline journey; Charlie Jagow is introduced.
With the peace talks in tatters, a new breed of Camorrista emerges - one not concerned about breaking time-honoured traditions.
Ciro sets up a parley with Gennaro in order to avoid a full-on gang war. Gennaro agrees, but with strict orders from his father.
The Boundless athletes take on the punishing Ultimate Mountain Challenge, the toughest event in the multi-day Vail Mountain Games festival. Cheered on by friends and family, they complete in standup paddling, mountain biking, trail running and a road bike time trial - each race pushing the athlete's fears, injuries and endurance in ways they never expected.
International scientists study and document the ancient royal tombs beneath the ancient Mexican city of Teotihuacán
Britain's best (and worst) variety acts compete to win a spot at the Royal Variety Show.
Britain's best (and worst) variety acts compete to win a spot at the Royal Variety Show.
When disaster strikes, who profits? FRONTLINE and NPR investigate the Business of Disaster, focusing on the aftermath of Superstorm Sandy: the thousands still not home, the agencies that were supposed to help and the companies that made millions.
Matt & Amy Roloff enlist the help of their four children Jeremy, Zack, Molly & Jacob to help expand the business of Roloff farms. As the kids grow older, the family grows larger and the Roloffs learn how to keep their family relationships strong.
Louis' brother pays a visit with some big news. Eddie attempts to find a way to watch Chris Rock's latest comedy special.
As the school prom approaches, Kenny tries to think of who the best guy would be to ask as his date. With time running out, Kenny and Jimmy try to come up with the perfect “prom-posal” for the classmates they each have set their sights on. Shannon thinks the idea behind prom is a scam and would rather stay at home, but once Pat discovers she was asked to attend, he tries to convince her to go. Meanwhile, Eileen tries to keep VP Murray’s romantic attention at bay but struggles to resist.