TV top picks

7 p.m. on CBS The Big Bang Theory Anyone who messes with Sheldon’s (Jim Parsons) perfectly ordered life — even Amy (Mayim Bialik) — is asking for trouble, as “The Hot Tub Contamination” proves. When she refuses to go along with his bathroom schedule, he threatens to end their relationship, prompting Leonard and Penny (Johnny Galecki, Kaley Cuoco) to intervene.

8 p.m. on USA Colony Will and Katie (Josh Holloway and Sarah Wayne Callies, pictured) must come up with a way to save a fugitive from the occupation in the new episode “Good Intentions.” Meanwhile, at the camp, Snyder (Peter Jacobson) hides evidence, and Broussard’s (Torry Kittles) cell is threatened by one of their own.

8 p.m. on FOX My Kitchen Rules The competition concludes its season with the tellingly titled “Champion Is Crowned,” pitting Lance Bass and his mother Diane against Andrew Dice Clay and his wife Valerie. All of their former rivals on the show are present for the four-course meal they must create, as are six world-class chefs.

8:30 p.m. on CBS Life in Pieces First shown just before the 2016 presidential election, “Receptionist Pot Voting Cramp” sees Greg (Colin Hanks) put off by the length of polling-place lines, then he fibs to Jen (Zoe Lister-Jones) that he did vote. When Heather (Betsy Brandt) gets a job at Tim’s (Dan Bakkedahl) office, the couple learns the perils of spending too much time together.

9 Trainingp.m. on Day CBS Fearing he’ll never solve his father’s murder if Frank (Bill Paxton) ends up incarcerated because of an internal police probe, Kyle (Justin Cornwell) tries to help clear the rogue partner he’s been investigating himself in the new episode “Wages of Sin.” Guest stars include Jeff Fahey, Emma Caulfield and W. Earl Brown (American Crime). Katrina Law, Drew Van Acker and Marianne Jean-Baptiste also star.