1) “Magnum P.I.” (shown here), 9 p.m., CBS. A week before their season-openers, all three CBS shows rerun their season-finales – big, busy ones. In this case, Magnum’s ex-girlfriend (Jordana Brewster) arrives. It’s not a cheery reunion because: a) She has a gunshot wound; b) She needs a favor; and c) She’s the reason Magnum and his SEAL team became POW’s.
2) “Hawaii Five-0” and “Blue Bloods,” 8 and 10 p.m., CBS. Two more shows repeat their season-finales. The Hawaiian guys chase a superhacker (Joey Lawrence), before he can sell cyber-weapons. Later, it’s time for Jamie (Will Estes) to marry Eddie (Vanessa Ray). But when Erin hears conflicting accounts a case, she starts to have doubts about Eddie, who’s about to become her sister-in-law.
3) “Great Performances,” 9 p.m., PBS. With sweet slices of gorgeous music and beautiful settings, violinist Scott Yoo takes a four-week tour of his music heroes. Yoo brings his wife (award-winning flutist Alice Dade), a Stradivarius violin and a deep curiosity. He starts with Vivaldi, then goes next week to Bach (a Vivaldi admirer), followed by Bach fams Scarlatti and Handel.
4) “Disenchantment,” any time, Netflix. It was 13 months ago that “Simpsons” creator Matt Groening introduced Princess Bean (short for Tiabeanie Mariabeanie de la Rochambeau Grunkwitz), a heavy-drinking 19-year-old, on the run with an elf and her personal demon. There were 10 animated episodes; here are 10 more, concluding the first season. A 20-episode second season is planned for next year.
5) More movies. Netflix also has a “Between Two Ferns” movie, based on the Zach Galifianakis’ series that pretended o be a cheap talk show. And cable has true stories — “Hidden Figures” (2016) at 8 p.m. on FX and football films on Turner Classic Movies: Burt Lancaster in “Jim Thorpe – All American” (1951) at 8 p.m. ET, Ronald Reagan as the Gipper in “Knute Rockne All American” (1940) at 10:15.