TV TOP PICKS

7 p.m. on CBS Big Brother

After the past winter’s first celebrity edition of this competition, it’s back to business as usual as a new set of regular-folks houseguests arrive to start the 20th season of strategizing, aligning and double-crossing in a residence laden with cameras and microphones. It’s all in pursuit of a $500,000 payday for the winner at the end of the summer. Of course, Julie Chen, above, is back as host of the proceedings, which will be broadcast weekly on Sunday, Wednesday and Thursday.

8 p.m. on HIST SIX

In the new episode “Indian Country,” the fearless members of Navy SEAL Team Six find themselves sorely tested as they receive orders charging them with orchestrating a complicated and high-stakes prisoner exchange in Chechnya. Barry Sloane, Kyle Schmid, Juan Pablo Raba, Edwin Hodge, Olivia Munn and Nadine

Velazquez star. 8 p.m. on OWN Queen Sugar

Blue (Ethan Hutchison) finally opens up and reveals what happened to him at school, and Violet (Tina Lifford) receives an interesting business proposal in the new episode “Delicate and Strangely Made.” Elsewhere, Charley (Dawn-Lyen Gardner) comes across something that raises her suspicions, and Ralph Angel (Kofi Siriboe) goes out on a date. Rutina Wesley also stars.

8 p.m. on USA Colony

In a new episode called “The Big Empty,” Will, Broussard, Amy and Bram (Josh Holloway, Tory Kittles, Peyton List, Alex Neustaedter) work together on a high-risk strategy: to kidnap a high-ranking IGA officer. Even if they succeed, there’s no guarantee their captive will be able to provide the information they so desperately need, and if they fail, well, the consequences will be dire for all concerned.

9 p.m. on NBC Reverie

A bombing victim, left in a coma as a result of the blast, is Monica Shaw’s (Kathryn Morris) only hope of determining who the perpetrator was in the new episode “Altum Somnum.” With many others left dead from the explosion, Mara (Sarah Shahi) is enlisted to enter the comatose person’s mind and find relevant details. Dennis Haysbert, Sendhil Ramamurthy and Jessica Lu also star.