cometThe insidious networks of misinformation who snake their conspiracy theories into mainstream news media are deftly explored in the chilling new documentary “After Truth: Disinformation and the Cost of Fake News” (HBO 9 p.m.), which begins with that weird belief that the military were training a secret operation in Texas during the Obama administration and moves through recent horrors, and includes the most complete report of Pizzagate and its aftermath to date. And there’s a fascinating inside camera on plans to discredit Robert Mueller with a lie.

The new series “Feel Good” (Netflix, streaming) created and starring Mae Martin, is a semi-autobiographical tale about an aspiring standup Canadian comedian in London who strikes up a romance with a woman who is new to same-sex flings.

The 17th season of “Top Chef” begins after an absence of about a year. It’s also got a new title “Top Chef All Stars: L.A.” (Bravo, 10 p.m.) which takes place, yes, in Los Angeles, where 15 past challengers return to compete at at Griffith Observatory. Host Padma Lakshmi and judges Tom Colicchio and Gail Simmons all return. Celebrity guests will include Kelly Clarkson, Jon Favreau, Ali Wong and Randall Park.

There are more than one prime time specials addressing the pandemic. Lester Holt hosts “NBC News Special Report: Coronavirus  Pandemic” (NBC, 10 p.m.). And “Confronting Coronavirus: A PBS Newshour Special” (PBS, 8 p.m., check local listings) is followed by a replay of an old special on past viruses, “Spillover: Zika, Ebola & Beyond” (PBS, 9 pm., check local listings). And there’s another “Global Town Hall” (CNN, 8 p.m.) on the epidemic.

A 12th season of “The Great Food Truck Race” (Food, 9 p.m.) starts off in Los Angeles.

Sam gives Phil a DNA test on “Better Things” (FX, 10 p.m.).

“Big Time Adolescence” (Hulu, streaming), the comedy that came out in theaters last week, starring Pete Davidson, makes its TV debut.

“Katy Keene” (CW, 8 p.m.) is asked to design a wedding dress.

Mike and Chuck compete in a chili cook-off on “Last Man Standing” (Fox, 8 p.m.).

“Station 19” (ABC, 8 p.m.) reacts to an Army veteran threatening to blow up a pawn shop.

JWoww celebrates her divorce on “Jersey Shore: Family Vacation” (MTV, 8 p.m).

“Superstore” (NBC, 8 p.m.) welcomes Amy’s baby but has parenting advice.

Doug Judy returns to “Brooklyn Nine-Nine” (NBC, 8:30 p.m.).

“Deputy” (Fox, 9 p.m.) tries to figure out a complicated case.

Meredith heads a pro bono surgery day on “Grey’s Anatomy” (ABC, 9 p.m.).

“CBS This Morning” (CBS, 8 p.m.) has switched its studio from the Broadcast Center, which is being cleaned because of virus exposure, to the Ed Sullivan Theatre, where “The Late Show with Stephen Colbert” (CBS, 11:35 p.m.) continues a planned vacation. Those makeshift monologues that Colbert inserted into shows that were otherwise reruns are over; Colbert said farewell to them Wednesday.

The twins’ 17th birthday turns dark on “Legacies” (CW, 9 p.m.).

On “Outmatched” (Fox, 8:30 p.m.), basement renovations temporarily deny the parents their safe space.

Alligator season occupies “Swamp People” (History, 9 p.m.) but it’s not like a “Swamp People: Serpent Invasion” (History, 10 p.m.).

On “The Bold Type” (Freeform, 9 p.m.), Jane throws Sutton a big bachelorette party.

Kristin launches her second store in Chicago on “Very Cavallari” (E!, 9 p.m.).

On “Will & Grace” (NBC, 9 p.m.), a gender reveal party is considered.

Christi and Billy Sr. go on a date night on the first of two new episodes of “The Busch Family Brewed” (MTV, 9 p.m.).

Dave doesn’t want to buy a minivan on “Indebted” (NBC, 9:30 p.m.).

On “The Sinner” (USA, 10 p.m.), Ambrose’s tactics are questioned.

The final participants arrive on “60 Days In” (A&E, 10 p.m.).

On “A Million Little Things” (ABC, 10 p.m.), Eddie tries to resolve mistakes from his past.

Turner Classic Movies presents the stories of Wyatt Earp with “My Darling Clementine” (8 p.m.), “Wichita” (10 p.m.), “Winchester ’73” (11:30 p.m.), “Doc” (1:15 a.m.), “Dodge City” (3:15 a.m.) and “Badman’s Country” (5 a.m.).

Earlier are movies about war nurses with, uh, “War Nurse” (9 a.m.), “A Farewell to Arms” (10:30 a.m.), “Cry ‘Havoc’” (midnight), “Homecoming” (1:45 p.m.), “Battle Circus” (3:45 p.m.) and “Purple Hearts” (5:30 p.m.).

Daytime Talk

Kelly Ripa and Ryan Seacrest: Blake Lively, Noah Centineo, Curtis “50 Cent” Jackson, Loud Luxury with Bryce Vine. The View: Justin Hartley, Dan Abrams. The Talk: Billy Ray Cyrus (rerun). Ellen DeGeneres: Michael B. Jordan, Bryan Stevenson, Charlize Theron, Rex Orange County (rerun). Kelly Clarkson: Tim Allen, Alison Pill. Tamron Hall: Tracy McMillan (rerun). Wendy Williams: Erika Jayne (rerun).

Late Talk

All reruns: Stephen Colbert: Tyra Banks, Coyote Peterson. Jimmy Kimmel: Vin Diesel, Aidy Bryant, Thundercat. Jimmy Fallon: Andy Samberg, Mary Elizabeth Winsted, Finneas. Seth Meyers: Rep. Alexandria Ocasio-Cortez, James Taylor. James Corden: Justin Bieber, Billy Crystal, Ben Schwartz. Lilly Singh: Tony Shalhoub, Ne-Yo. Trevor Noah: Mikki Kendall. David Spade: Jim Carrey. Conan O’Brien: Adam Scott.