1) “The Resident,” 9 p.m., Fox. At first glance, this is a Halloween episode – vampires … and rising from the dead … and The Raptor (shown here) and Mina stranded in a creepy town, filled with angry stares. Stick around, though; there’s a medical basis for each story. The two hospital ones are heavy-handed, despite terrific work from Jonathan Lipnicki (the former child star) in the “vampire” tale. But the third, in creepyville, is beautifully written and filmed, with an important story at its core.
2) Presidential debate, 8 p.m. ETT, CNN. It will be a crowded stage — all 10 people from the previous debate, plus Tulsi Gabbard and Tom Steyer. There should be a lot to talk about; CNN’s Erin Burnett and Anderson Cooper will anchor with the New York Times’ Marc Lacey.
3) “The Conners,” 8 p.m., ABC. It’s been fun to see the always-excellent Johnny Galecki here as David. Now, however, Darlene is close to deciding between David and Ben. Also, her sister Becky, desperate for money, considers a bartending job – a tough duty for an alcoholic.
4) “Arrow” season-opener, 9 p.m., CW. Of all the shows this fall on the five big commercial broadcast networks – 82 of them – this is the last to arrive. It’s also an important one for CW, which now has its six-show “Arrowverse.” The eighth and final season – only 10 episodes – starts with Oliver returning, trying to figure The Monitor’s mission. Also, the Mia and William team collides with a new foe.
5) “Treadstone” debut, 10 p.m., USA. The first 11 minutes are as dark and brutal as anything on TV; the rest doesn’t get much brighter. We‘re visiting the early days of the program that molded Jason Bourne and other super-assassins. Leaping between Russia, Germany, North Korea, Alaska, London and more, high-octane scenes are often nasty, sometimes perplexing and usually involving