What If...? - Cast and Crew

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.

American Ninja Warrior is an action-packed series that follows competitors as they tackle a series of challenging obstacle courses in both qualifying and finals rounds across the country. Those that successfully complete a course in their designated region move on to the national finals round in Las Vegas, where they face a stunning four-stage course modeled after the famed Mt. Midoriyama in Japan.

Restaurateurs who are looking for a quick fix or social media glow-up are in for the surprise of their lives when famed culinary titan Gordon Ramsay trades his signature chef knives for a state-of-the-art surveillance vehicle and cutting-edge spyware in FOX's all-new unscripted series, Gordon Ramsay's Secret Service. In a Gordon Ramsay series first, Chef Ramsay will venture into struggling restaurants under the cover of night. With the help of a secret source on the inside, he'll gather raw, unfiltered evidence and get a 360-degree view of the major issues facing each restaurant. This insider will not only remain a secret to the staff, but will also help Ramsay infiltrate the restaurant after-hours for a dramatic nighttime black light kitchen investigation that reveals more filth and grossness than ever before. By the time Ramsay reveals his identity, it will be too late for staff to cover up their culinary crimes. Gordon Ramsay's Secret Service will be his toughest assignment yet as he takes drastic measures to transform not only the restaurant but also the staff, because Gordon knows he can upgrade the menu and renovate the restaurant, but the most important change has to come from the people. Are the restaurant and staff willing to accept Gordon's mission, or are they too far gone to be saved?

Emmy Award and Grammy Award winner Jimmy Fallon brought NBC's "The Tonight Show" back to its New York origins when he launched The Tonight Show Starring Jimmy Fallon from Rockefeller Center. Fallon puts his own stamp on the storied NBC late-night franchise with his unique comedic wit, on-point pop culture awareness, welcoming style and impeccable taste in music with the award-winning house band, The Roots.

The Librarians: The Next Chapter centers on Vikram Chamberlain, a "Librarian" from the past who time traveled from 1847 and now finds himself stuck in the present. When Vikram returns to his castle in Belgrade, Serbia and discovers that it is now a museum, he inadvertently releases magic across the continent. With the help of a new team of eclectic heroes, including a savant in world history, a scientific genius, and a highly skilled Guardian, Vikram has only six months to clean up the mess he made.