1) “Barkskins” finale (shown here), 9-11:03 p.m. ET, National Geographic, rerunning at 12:03 a.m. Brutal and bitter, this eight-hour mini-series will leave everyone with mixed emotions. Annie Proulx’s story of the 17th-century American frontier has a rich blend of characters, with little in common except intense cynicism. Now Cooke leads a mission to retrieve bodies … while claiming he doesn’t have the coveted pistols. Trepagny plans a wedding, while his housekeeper (and ex-lover) broods. Things explode powerfully.
2) “Roswell, New Mexico” season-finale, 9 p.m., CW. CrashCon is supposed to be a festive time, when Roswell savors the legend of aliens and a long-ago crash. But to Liz – who knows the legend is true – this is a nightmare. The festival has been infiltrated by a deadly threat; she realizes she can’t save everyone she loves. Also, Max faces immediate danger and Maria’s life teeters.
3) “Songland” season-finale, 10 p.m., NBC. Four songwriters pitch songs to Usher … which can be a good way to have a hit record. He’s had 18 top-10 singles on the Billboard chart, half of them reaching No.1. Many lingered; for more than half of 2004 (28 of 52 weeks), an Usher song was No. 1.
4) “The Bachelor: The Greatest Seasons – Ever,” 8-11 p.m., ABC. We flash back to the 2015 “Bachelorette,” which started with a twist: In a vote, the guys chose between two women. They sent Britt Nilsson home and kept Kaitlyn Bristowe, who’s the opposite of the dating-show cliché of a soft-spoken Southern blonde. Bristowe is a Canadian brunette with a quick sense of humor.
5) ALSO: In a late switch,. PBS has inserted “America in Black and Blue 2020” at 9 p.m. Following up on a 2016 special, it views police in Minneapolis, Georgia, New York and elsewhere. Meanwhile, a “Hidden” sequel debuts on www.acorn.tv. Like the original, it uses the bleak Welsh countryside to add texture to a complex crime story. Some of the characters speak Welsh, with English sub-titles.