As we round the bend toward the end of another TV season, folks are wondering what shows will stay or go. When I speculate on such matters, I tend to be wrong more than half the time. There’s hardly a science to determining whether a show will be canceled. I can sort of smell when a show should be given the heave-ho, but sometimes that doesn’t matter. Often, the network has too many holes to fill. Last spring, I all but guaranteed that “Chuck” would get the hook. But NBC brought it back to limp through one last season. Was that a good idea?

Roughly a year ago, two shows debuted with remarkably similar plots. CBS trotted out “CHAOS,” a comedy about a would-be spy dragooned into a clandestine agency. A few days later, Fox aired “Breaking In” (8:30 p.m.), about a super-secret private spy ring run by knuckleheads and starring Christian Slater. It was like TNT’s “Leverage” done for laughs. Except there weren’t that many laughs.

The return of “Breaking In” shuffles the schedule for Fox’s Tuesday night comedies. The best of them, “Raising Hope” (7 p.m.), moves to the earliest slot. Can it succeed without a bigger show as a lead-in? Taking no chances, tonight’s show features guest-star Katy Perry, the pop music icon who has fashioned herself into a curiously antiseptic pinup.

• Lone Star State residents search for hidden treasures in storage lockers in the second season of “Storage Wars: Texas” (9 and 9:30 p.m., A&E).

Tonight’s other highlights

• After a plane crash, a FedEx employee (Tom Hanks) gets all the “me time” he can handle in “Cast Away” (6 p.m., Fox Movie Channel).

• Nick gets injured but lacks insurance on “New Girl” (8 p.m., Fox).

• Lena comes clean on “The River” (8 p.m., ABC).

• A killer and his victim share something important on “Unforgettable” (9 p.m., CBS).

• “Decision 2012” (9 p.m., NBC) joins cable news networks in reporting results from states participating in the Super Tuesday primaries.

• Winning the lottery can be murder on “Body of Proof” (9 p.m., ABC).

• Children must be rounded up after the death of their nanny on “Southland” (9 p.m., TNT).

• A murder brings Raylan’s mistakes to light on “Justified” (9 p.m., FX).