NCIS Bruce McGill guest-stars as a surly Vietnam War veteran who may help Gibbs (Mark Harmon) and the team solve a Marine’s murder. Pauley Perrette, Wilmer Valderrama, Jennifer Esposito and Sean Murray also star. 8 p.m. CBS
The Flash David Dastmalchian guest-stars as DC Comics villain Abra Kadabra, who is willing to help Barry (Grant Gustin) vanquish Savitar in exchange for freedom.Read more
It’s one of those rare mornings when Andrew Lincoln doesn’t have the weight of saving humanity from the zombie apocalypse on his shoulders. On this particular Saturday, he’s just a guy engrossed in a copy of “A Little History of Science” and hankering for a plate of huevos rancheros.
“I’m kind of going through a nonfiction phase,” he says, slipping the hardcover into a backpack.Read more
Supergirl Supergirl (Melissa Benoist) is a wanted woman, and aliens invade National City to try to claim a bounty put on her. Lynda Carter and Hayley Sales guest star in this new episode directed by filmmaker Kevin Smith (“Clerks”). 8 p.m. KTLA
24: Legacy CTU goes under a lockdown after a credible threat is made, while Carter (Corey Hawkins) is caught in a harrowing situation.Read more
The famously close-mouthed cast and creators of HBO’s “Westworld” opened up a little Saturday night at the Los Angeles PaleyFest. The panel of hosts and cowpokes finally confirmed a long-running fan question from the series finale and shared stories about what it was like working on a show in which you’re not sure if you’re a human or a robot.Read more
The celebrity host: Dwayne “The Rock” Johnson.
The challenge: 38 young convicted felons who must make it through four grueling months in a boot camp rehabilitation program, or face prison sentences ranging from five years to life.Read more
It’s nearly 7 p.m. Wednesday night and “Full Frontal With Samantha Bee” is running late. Between hearings for Supreme Court nominee Neil Gorsuch, the raging healthcare debate, the president’s proposed budget, fallout from FBI director James Comey’s congressional testimony and the terror attack in London, it’s an unusually busy news day — even by the dizzying standards of the Trump administration.Read more