1) “9-1-1: Lone Star,” 9:01 p.m., Fox. Romance, it seems, can be tricky. We see that right away, when a wedding reception takes some nasty (and kind of funny) twists. Then we see it in three relationships – Owen and his ex-wife (Rob Lowe and Lisa Edelstein, shown here) … their son and his boyfriend … and Marjan and a surprise visitor (Mena Massoud, who had the title role in the 2019 “Aladdin” movie). One of the stories has an ending that perplexes the characters and the viewers, but this is still a worthy Valentine Week episode.
2) “9-1-1,” 8 p.m., Fox. Athena’s daughter faces her first crises as a 9-1-1 operator. That leads to two crime calls – one with cartoon-ish characters and another that’s resolved way too easily. That leaves the so-so main story, which is an odd brew: Buck and Maddie nervously await a visit by their parents (Dee Wallace and Gregory Harrison), while Chimney struggles with a secret he can’t keep.
3) “Bob (Hearts) Abishola,” 8:30 p.m., CBS. This terrific show tends to be weakest when focusing on Bob’s siblings. Maybe this will be an exception: His sister strikes up a friendship with Abishola and his brother gets unexpected praise, after boosting the workers’ morale.
4) “Black Lightning” season-opener, 9 p.m., CW. Jefferson Pierce – the former high school principal who uses his superpowers as Black Lightning – is lonely. His ex-wife disagrees with him; his friend, Bill Henderson, was killed, shortly after saving him. Now Pierce is in mourning, while his mentor, Peter Gambi, is offered a fresh opportunity.
5) “Balthazar” new season, any time, www.acorn.tv. Raphael Balthazar is a handsome and talented forensics pathologist, the sort of guy people envy. But more than a decade after his lover was killed, he remains shattered; he imagines conversations with her and with the deceased people he’s examining. After a colleague’s death last season, Balthazar left to sail the seas. Six months later, we see him reach an odd island. The result (French, with English sub-titles) is, as usual, a smart story, beautifully filmed.