“CSI: Vegas” (CBS, 10 p.m.) goes on lockdown when a murder suspect may be in the lab.
Oh, the humanity: The legacy of the Hindenburg explosion blows up again on “Secrets of the Dead” (PBS, 10 p.m., check local listings).
The Peacock series “Intergalactic” (Syfy, 10 p.m.) gets a replay on cable.
“Chicago Med” (NBC, 8 p.m.) conducts a random drug test; “Chicago Fire” (NBC, 9 p.m.) has an office space program; and “Chicago P.D.” (NBC, 10 p.m.) investigates the stabbing of a father.
Life on other planets is considered on the “Universe Revealed” series on “Nova” (PBS, 9 p.m., check local listings).
“Doogie Kamealoha, M.D.” (Disney+, streaming) winds up its first season.
The number of advantages and immunity levers on “Survivor” (CBS, 8 p.m.) has succeeded in making it super confusing.
Sheep make a break for it on “Wild Tales from the Farm” (Smithsonian, 8 pm.).
The subjects on “My 600 lb Life” (TLC, 8 p.m.) doesn’t seem to have dropped many pounds as a new season begins. And I’m not sure how it measures against the subjects on the new “Too Large” (TLC, 10 p.m.).
“Batwoman” (CW, 9 p.m.) attends a dinner party that’s crashed by an unwanted invader.
Mud gums up the works on “Tough as Nails” (CBS, 9 p.m.).
“The Masked Singer” (Fox, 8 p.m.) holds the semifinals among Group A. But how much can be left after the Beach Ball was revealed to be Honey Boo Boo and Mama June last week?
The last four contestants compete before semifinals on “Alter Ego” (Fox, 9 p.m.).
“DC’s Legends of Tomorrow” (CW, 8 p.m.) arrives in New York City.
Andrea takes Paige out for their first date on “Winter House” (Bravo, 9 p.m.).
On “The Bradshaw Bunch” (E!, 9 p.m.), Erin keeps a lid on her pregnancy news.
Trevor Noah drops by “Jay Leno’s Garage” (CNBC, 10 p.m.).
“If We Built It Today” (Science, 9 p.m.) considers Stonehenge.
A new episode comes for “Full Frontal with Samantha Bee” (TBS, 10:30 p.m.).
“Clash of the Cover Bands” (E!, 9:30 p.m.) pits groups against one another playing Foo Fighters and Blink-182.
Ambrose discovers the source of Percy’s practices on “The Sinner” (USA, 10 p.m.).
The month-long Wednesday night showcase of Sydney Greenstreet continues with “Ruthless” (8 p.m.), “Flamingo Road” (10 p.m.), “The Woman in White” (11:45 p.m.), “Malaya” (1:45 a.m.) and “Background to Danger” (3:30 a.m.). During the day is one character, in “The Return of Bulldog Drummond” (8 a.m.), “Bulldog Drummond’s Peril” (9:15 a.m.), “Camera Sleuth” (10:30 a.m.), “Bulldog Drummond in Africa” (10:45 a.m.), “Bulldog Drummond’s Bride” (11:45 a.m.), “So You Want to Be a Detective” (12:45 p.m.), “Arrest Bulldog Drummond” (1 p.m.), “Bulldog Drummond’s Secret Police” (2 p.m.), “Bulldog Drummond’s Revenge” (3 p.m.), “Bulldog Drummond Escapes” (4 p.m.), “How to Be a Detective” (5:15 p.m.), “Bulldog Drummond Comes Back” (5:30 p.m.) and “Calling Bulldog Drummond” (6:30 p.m.).
NBA action includes Detroit at Houston (ESPN, 7:30 p.m.) and Miami at Los Angeles (ESPN, 10 p.m.).
Hockey includes Toronto at Philadelphia (NHL, 7:30 p.m.) and Minnesota at Arizona (TNT, 10 p.m.).
College football includes Toledo at Bowling Green (CBS Sports, 7 p.m.), Ball State at Northern Illinois (ESPN2, 7 p.m.) and Kent State at Central Michigan (ESPNU, 8 p.m.).
College basketball includes Farleigh Dickinson at Seton Hall (Fox Sports 1, 7 p.m.) and Coppin State at DePaul (Fox Sports 1, 9 p.m.).
Daytime Talk
Kelly Ripa and Ryan Seacrest: Lucy Hale, Jon Batiste, Dr. Holly Phillips. The View: Dr. Vivek Murthy, Keke Palmer. The Talk: David Alan Grier. Ellen DeGeneres: Jamie Foxx. Drew Barrymore: Emily Ratajkowski, Jerry McCarthy. Kelly Clarkson: Kal Penn, Haylie Duff, Yung Bleu. Tamron Hall: The cast of “The Game,” Nishelle Turner, Mallory Weggemann. Wendy Williams: Dorinda Medley, Michael Rapaport. The Real: Grant Hill.
Late Talk
Stephen Colbert: Aubrey Plaza, Bruce Springsteen. Jimmy Kimmel: Ryan Reynolds, Science Bob Pflugfelder, Ryan Hurd with Maren Morris. Jimmy Fallon: Will Ferrell, Lucy Hale, Beeile, Dusty Slay. Seth Meyers: Gayle King, David Copperfield, Aurora, Elmo Lovano. James Corden: Dwayne Johnson, Avril Lavigne. Trevor Noah: Bad Bunny.