“American Idol” 7 p.m. to 9 p.m., Fox (New)
Ten semifinalists perform in Las Vegas.
“Arrow” 7 p.m., CW (New)
Oliver asks detective McKenna on a date, and a jewel thief named Dodger hits Starling City, targeting someone close to Oliver.
“Criminal Minds” 8 p.m., CBS (New)
The unit travels to Austin where they discover murder victims whose watches are all set inaccurately. Meanwhile, the person stalking the team inches closer in his pursuit.
“Modern Family” 8 p.m. to 8:31 p.m., ABC (New)
When Claire goes to her college reunion she encounters a professor she dated, which causes an awkward situation when Phil shows up as a surprise.
“Baggage Battles” 8 p.m., Travel Channel (New)
It’s the luggage itself that is the prize when two bidders battle over vintage Samsonite bags.
“Suburgatory” 8:31 p.m., ABC (New)
Tessa begins dispensing romantic advice whether people ask for it or now, though her attempt to help Mr. Wolfe doesn’t work out so well.
“CSI: Crime Scene Investigation” 9 p.m., CBS (New)
Sara becomes the lead suspect in a murder investigation due to a brief encounter with the victim.
“A Special Edition of 20/20” 9 p.m., ABC (New)
Katie Couric explores the history of the Academy Awards, including behind-the-scenes footage of past Oscar presentations, home movies of classic stars and a look back at memorable speeches, unscripted moments and red-carpet fashion.
“Southland” 9 p.m., TNT (New)
Ben investigates when Mendoza is injured in a drive-by incident, while Lydia probes the slaying of a female boxer’s husband.
“The Americans” 10 p.m., FX (New)
An assassination attempt is made on President Reagan, and Stan tries to determine if the KGB was responsible.
“My Strange Addiction” 9 p.m., TLC (New)
Some would call this an addiction while others would call it vanity. A 47-year-old woman spends six hours every day grooming her 21-foot-long hair that weighs 10 pounds.
— Laura King
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