ABC, 8:00 p.m. ET
SEASON FINALE: This year’s adventures on S.H.I.E.L.D. have been all over the place – and all over space and time as well. For this season finale, the world once again hangs in the balance, but this time the world in question is Earth – and the villain is a body-borrowing intergalactic villainess named Izel, played by Karolina Wydra (pictured), who plans to absorb and destroy the planet’s energy as part of an even greater and more menacing plan. But whatever happens tonight, Marvel’s Agents of S.H.I.E.L.D. has been renewed for one final season, so don’t expect the end of the world, much less the galaxy or universe, just yet.
Disney Channel, 8:00 p.m. ET
MOVIE PREMIERE: The previous two films in this Disney franchise, from 2015 and 2017, both ended the same way, setting up a sequel by having a character look to the camera and ask, “You didn’t think this was the end of the story, did you?” Not when the previous Disney movie franchise, High School Musical, was so mega-popular among its tween viewers. So here we have the third iteration of The Descendants, which follows the respective, but not necessarily respectful, teen children of Disney villains Maleficent, Cruella de Vil, Jafar, and the Evil Queen. Sadly, this will be the last appearance of Cameron Boyce, one of the stars of The Descendants movies. Cameron passed away last month at the young age of 20.
Cinemax, 10:00 p.m. ET
This is the penultimate episode of Jett, which you can expect will put her in even more peril than usual – and increasingly uncertain about where her own loyalties should lie.
HBO, 10:00 p.m. ET
Hooray. He’s back. Now tell us, Bill, what you thought of the debates thus far, and the Mueller testimony, and the latest Trump rallies, and everything else you didn’t get to talk about during your summer vacation from TV.