8 p.m., ABC FamilyShay Mitchell) return to the swim team inspires competitive behavior among her teammates, Aria (Lucy Kate Hale) and Ezra (Ian Harding) start dating in public, and Spencer (Troian Avery Bellisario) probes Jason (Parker Bagley) for information about Ali’s death.
Season 3 finale, 9 p.m., FOXthe series—finale, Lie to Me channels its inner Aaron Sorkin and David Fincher: Lightman (Tim Roth) looks into the death of the creator of a popular social network.
9 p.m., NBCMena Suvari guest stars as a physics genius/superhero who targets Chess (James Frain) in a plan to avenge her father's murder. This forces Vince (David Lyons) to protect Chess... at least for now.
9 p.m., CWChace Crawford) is busy worrying about his father’s money troubles, Dan (Penn Badgley) and Blair (Leighton Meester) are forced to work together when they get jobs at the same magazine.
11 p.m., TBSTim and Eric Awesome Show, Great Job!, as well as Parks and Recreation’s Amy Poehler.
Also on the airwaves...
The Bachelor, 8 p.m., ABC
Human Target, 8 p.m., FOX
Chuck, 8 p.m., NBC
90210, 8 p.m., CW
Intervention, 9 p.m., A&E;
Greek, 9 p.m., ABC Family
Being Human, 9 p.m., Syfy
Cake Boss, Season 4 premiere, 9 p.m., TLC
Harry’s Law, 10 p.m., NBC
Heavy, Series premiere, 10 p.m., A&E;
Tabatha’s Salon Takeover, 10 p.m., BRAVO
Skins, 10 p.m., MTV
NCAA Men’s Basketball: Maryland Eastern Shore v. Hampton, Louisville v. Georgetown, Texas v. Texas A&M;, Alabama State v. Texas Southern
NCAA Women’s Basketball: Maryland Eastern Shore v. Hampton, Duke v. Connecticut
What are you watching tonight?
Follow TV.com writer Stefanie Lee on Twitter: @StefAtTVDotCom