By Bethonie Butler,
(All times Eastern).
Lethal Weapon (Fox at 8) Riggs and Murtaugh investigate an arms-trafficking case that begins with a noise complaint at the home of a heavyweight boxer (singer Jason Derulo).
Blindspot (NBC at 8) Weller and the team race to thwart a series of bombings across the city.
Survivor: Millennials vs. Gen X (CBS at 8) One castaway deals with a crush.
Forces of Nature (WETA at 8) The docuseries explores the colors of Earth.
Speechless (ABC at 8:30) Maya has trouble adjusting to Kenneth taking over as JJ’s full-time aide.
America’s Military and the Commander in Chief (CNN at 9) President Obama joins Jake Tapper to discuss the challenges facing U.S. veterans.
Empire (Fox at 9) Taye Diggs guest-stars as a businessman who teams up with Jamal to raise awareness about gun violence.
Modern Family (ABC at 9) Mitch and Cam do some soul-searching after they overhear Lily insult her new friend.
Blackish (ABC at 9:30) Dre seeks insight when Zoey questions her faith. Daveed Diggs (of “Hamilton” fame) guest-stars as Bow’s brother.
Queen Sugar (OWN at 10) Nova’s activism leads to tension in her relationship.
Criminal Minds (CBS at 9) Season 12.
Younger (TV Land at 10) Season 3.
Impastor (TV Land at 10:30) Season 2.
Samantha Bee (TBS at 10:30) Debate special.
Conan (TBS at 11) Kunal Nayyar, Phoebe Robinson, Jamestown Revival.
Daily Show (Comedy Central at 11) Reid Hoffman.
Fallon (NBC at 11:34) Sting, Kate McKinnon.
Colbert (CBS at 11:35) Lupita Nyong’o, John Prine.
Kimmel (ABC at 11:35) Sarah Jessica Parker, Daveed Diggs, Dan + Shay.
Corden (CBS at 12:37) Anjelica Huston, Wilmer Valderrama, Shawn Mendes.
Meyers (NBC at 12:37) January Jones, Mike Colter, Chris Lane, Danny Carey.
— Bethonie Butler