American Ninja Warrior The obstacle-course challenges return with another all-stars edition; with hosts Matt Iseman, Akbar Gbajabiamila and Kristine Leahy. 8 p.m. NBC
Supergirl Another classic DC Comics character surfaces in this new episode, when Mr. Mxyzptlk (guest star Peter Gadiot) attempts to court Kara (Melissa Benoist). 8 p.m. KTLA
The Bachelor It’s time for Nick’s hometown visits with the remaining bachelorettes in this new episode of the matchmaking series. 8 p.m. ABC
Antiques Roadshow The treasure-seeking series rolls into Palm Springs for the first part of a...