“La Brea” (NBC, 9 p.m.) may seem like too direct a metaphor for network TV: tumbling down a sinkhole. Like a lot of sci-fi tinged broadcast series begin like this: blowing its budget on special effects which in this case sends victims down a widening hole on Wilshire Boulevard. Natalie Zea is among those falling. Problems begin when she and other victims land into a mysterious place down in the middle of Earth, I guess. Then wolves and prehistoric birds appear and government figures look like they were involved somehow. Its future will likely be more like “Under the Dome” than “Lost.” Jon Seda and Ione Skye are part of the cast.

“Britney vs. Spears” (Netflix, streaming) is the latest documentary on the pop star and the conservatorship that has bound her for years. They’re all coming out in advance of a big court date for Spears on Wednesday.

A shocking breakup is promised on a three-hour “Bachelor in Paradise” (ABC, 8 p.m.). 

“Attack of the Hollywood Clichés” (Netflix, streaming) enumerates the oft-seen tropes you know all too well. Rob Lowe hosts.

The only new preschool animated show with the names of Barack and Michelle Obama on it is “Ada Twist, Scientist” (Netflix, streaming) fro the makers of “Doc McStuffins.”