TV HIGHLIGHTS

Movie: Descendants 3, 8 PM on DIS; 9:55 PM on DIS; 11:50 PM on DIS:

This new fantasy, the third and final installment in the “Descendants” movie trilogy, finds Maleficent’s daughter Mal (Dove Cameron) and three other offspring (Sofia Carson, Cameron Boyce, Booboo Stewart) of classic Disney villains inadvertently causing a magical barrier breach while visiting the Isle of the Lost to recruit new students for their school. Soon, a dark force threatens their kingdom. Cheyenne Jackson co-stars. Tragically, Boyce, a popular Disney Channel star, died at age 20 of complications from a medical condition after filming was completed.

American Masters, 9 PM on Ch. 48; 1 AM on Ch. 16 and Ch. 48:

The new “Worlds of Ursula K. Le Guin” profiles the acclaimed author whose success at breaking into the largely male-dominated genre of science fiction helped bring that form into the literary mainstream. Made with Le Guin’s participation over a decade and premiering during the 50th anniversary year of “The Left Hand of Darkness,” the author’s landmark exploration of gender fluidity, the film also includes interviews with several other writers influenced by Le Guin’s work: Margaret Atwood, Neil Gaiman and Michael Chabon.

I Was Prey: Shark Week, 10:01 PM on DSC; 1:01 AM on DSC:

This new film recreates two hair-raising real-life shark attacks to show how the victims narrowly were able to avert the ultimate tragedy and fight back against their finny assailants. Single mom Leeanne Ericson is enjoying a mellow day in the waters off a Southern California beach when she feels a great white shark grab her leg and pull her under. Elsewhere, off the rugged northern coast of Hawaii, spearfisherman Braxton Rocha is ambushed by a truly massive tiger shark.