Veteran “American Ninja Warrior” contestants return to compete and “Expedition Unknown” tests people’s knowledge of the Nazis.

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“CMT Music Awards 2018”

Country-music awards hosted by Little Big Town; scheduled performers include Blake Shelton, Chris Stapleton, Kelsea Ballerini, Luke Bryan, Sam Hunt, Kelly Clarkson, Jason Aldean, Carrie Underwood, Dierks Bentley, Darius Rucker, Backstreet Boys and Florida Georgia Line; 8 p.m. Wednesday on CMT, Paramount and TVLand.

Also on Wednesday

“American Ninja Warrior,” 8 p.m. (KING): Competitors face six obstacles, including the Jumper Cables and the Doorknob Drop; veteran “American Ninja Warrior” competitors Sean Bryan, Kevin Bull and Flip Rodriguez compete.

“The Fosters,” 8 p.m. (FREEFORM): Last episode of the three-part finale; the mothers make a huge decision that changes the family forever.

“The Originals,” 9 p.m. (KSTW): Ivy startles Klaus with details about the dark magic that’s been keeping him from his family; unexpected allies help Elijah save Antoinette.

“Code Black,” 10 p.m. (KIRO): Rox’s former step coach arrives at the hospital with the local team after a pyramid stunt goes wrong; debating an emergency hysterectomy on a teenage girl.

“Colony,” 10 p.m. (USA): The Bowman family encounters danger on the road to a possible new home; after receiving a hero’s welcome at IGA headquarters, Snyder settles into retirement.

“Expedition Unknown,” 10 p.m. (TRAVEL): Josh Gates goes on a globe-trotting quest to test people’s knowledge of the Nazis and their secrets for a chance to win a big cash prize.

“House Hunters,” 10 p.m. (HGTV): A Salem, Oregon, couple hunts for a duplex to share with her sister’s family.

“The Late Show With Stephen Colbert,” 11:35 p.m. (KIRO): Actress Mandy Moore; singers Sara Bareilles and Josh Groban; Meghan Trainor performs.

Madeline McKenzie: Program times may vary depending on your cable provider or service.