So far, no significant treasure has been found in the longtime island search, but there is a new spinoff: “Beyond Oak Island” (History, 10 p.m.). 

Guys on “The Bachelorette” (ABC, 8 p.m.) adapted to wooing mid-season replacement Tayshia Adams with surprising ease. 

A hidden underground network that developed a symbolic language is the topic on “Cosmos: Possible Worlds” (Fox, 8 p.m.).

“Finding Your Roots with Henry Louis Gates Jr.” (looks at the family stories of Scarlett Johansson, Lupita Nyong’o and Lidia Bastianich.

Knockout rounds begin on “The Voice” (NBC, 8 p.m.). 

On “Next” (Fox, 9 p.m.), a stolen hard drive might provides clues.

Sleep training is tough on “This is Us” (NBC, 9 p.m.). 

“Rise of the Nazis” (PBS, 9 p.m., check local listings) tracks the first six months Hitler was in power. 

Theo treats a young athlete with mysterious symptoms on “Transplant” (NBC, 10 p.m.). 

Everybody’s trying to take down “Swamp Thing” (CW, 8 p.m.).

“Chopped” (Food, 9 p.m.) tries sloppy Joes. 

Buddy tries to apologize to Whitney on “My Big Fat Fabulous Life” (TLC, 9 p.m.). 

Turner Classic Movies has chapter 12 of “Women Make Film” (8 and 11:15 p.m.) accompanied by a few examples, including “Stories We Tell” (9:15 p.m.), “Shag: The Movie” (12:30 a.m.), “The Day I Became a Woman” (2:30 a.m.) and “Lourdes” (4 a.m.). 

During the day is all Bogie with “The Petrified Forest” (6 a.m.), “San Quentin” (7:30 a.m.), “Racket Busters” (8:45 a.m.), “King of the Underworld” (10 a.m.), “They Drive by Night” (11:15 a.m.), “The Maltese Falcon” (1 p.m.), “The Big Sleep” (2:45 p.m.) and “The Treasure of the Sierra Madre” (5 p.m.). 

College football has Buffalo at Bowling Green (CBS Sports, 7 p.m.) and Akron at Kent State (ESPN, 8 p.m.). 

Soccer includes Egypt at Togo (beIN Sports, 11 a.m.), Tunisia at Tanzania (beIN Sports, 2 p.m.) and Portugal at Croatia (ESPN2, 2:45 p.m.).

And this weird year of Korean baseball broadcasts ends early this morning with the start of the 2020 Korean Series (ESPN2, 4:30 a.m.).

Daytime Talk

Kelly Ripa and Ryan Seacrest: Ryan Phillippe, Buddy Valastro. The View: Michael J. Fox. The Talk: Jamie Lee Curtis. Ellen DeGeneres: Sarah Paulson, Kiera Allen. Drew Barrymore: Michael Strahan, Jamie Oliver. Kelly Clarkson: Holly Robinson Peete, Candace Cameron Bure, Lacey Chabert, Kane Brown, Maggie Rose. Tamron Hall: Alfonso Ribeiro, DJ Jazzy Jeff, Joseph Marcell, Karyn Parsons, JaQuel Knight, Boys World. Wendy Williams: Romeo. The Real: Tyra Banks. 

Late Talk

Stephen Colbert: Lewis Hamilton, Andrea Bocelli. Jimmy Kimmel: Alison Brie, G-Eazy with Blackbear. Jimmy Fallon: Whoopi Goldberg, Emma Corrin, Dierks Bentley. Seth Meyers: Hugh Laurie, Rachel Bloom, LP, Valerie Franco. James Corden: Melissa McCarthy, Bobby Bannavale, FITZ. Lilly Singh: Adam Pally, Abby Elliott (rerun). Conan O’Brien: Tracee Ellis Ross.