Your BEST BETS

To watch

8 p.m. on (13) (16) Dancing With the Stars.

The dance competition series opens its milestone 30th season with Olympic gold-medal gymnast Suni Lee and pop star JoJo Siwa among the 15 contestants competing for the coveted mirror ball trophy this season. Kenya Moore, a cast member from “The Real Housewives of Atlanta,” also is heavily rumored to be included in this season’s cast. Len Goodman, Derek Hough, Carrie Ann Inaba and Bruno Tonioli all return as judges, and Tyra Banks likewise is back as host.

8 p.m. on (14) (8) The Neighborhood.

With sitcom veteran Meg DeLoatch taking over as showrunner behind the scenes and fresh talent in the writers room, this hit sitcom opens Season 4 with “Welcome to the Family,” which finds Dave (Max Greenfield) researching his family tree and discovering that he and Calvin (Cedric the Entertainer) are more than just neighbors. Meanwhile, Tina (Tichina Arnold) inadvertently stumbles onto a promising business idea as she tries to help expectant mom Gemma (Beth Behrs) deal with her morning sickness.

9 p.m. on (14) (8) NCIS.

Season 19 opens with “Blood in the Water,” which finds the NCIS team desperately trying to learn Gibbs’ (Mark Harmon) fate after they discover wreckage from the boat explosion at the climax of Season 18. Their investigation reveals that he had been tracking a serial killer with assistance from journalist Marcie Warren (Pam Dawber, returning in a guest role), who had written an exposé on him. Sean Murray, Wilmer Valderrama, Brian Dietzen and Diona Reasonover also star; David McCallum appears in his recurring role.

9 p.m. on (15) The Big Leap.

Scott Foley (“Scandal”), Teri Polo (the “Meet the Parents” films) and Piper Perabo (“Covert Affairs”) are among the stars of this new dramedy about a group of down-on-their-luck characters who are hoping to change their fortunes as part of a reality dance show that features a modern re-imagining of “Swan Lake.” (Pretty sure this is what they call “high concept”). The cast also includes newcomer Simone Recasner, Ser’Darius Blain (“Charmed”), Jon Rudnitsky (“Catch-22”), Mallory Jansen (“Galavant”) and Kevin Daniels (“Modern Family”).

10 p.m. on (13) (18) Ordinary Joe.

On the night of his college graduation, Joe Kimbreau (James Wolk) finds himself faced with one of those momentous decisions that could change the course of his life. This life-affirming drama unfolds as three parallel narratives that diverge on that night, as Joe — or rather, three different versions of him — experiences the rest of his life resulting from that decision, with certain elements remaining identical, but others taking a different course. Natalie Martinez, Charlie Barnett, Elizabeth Lail, David Warshofsky and Teddy Sears co-star.