Elsewhere on TV ...
The Middle (7 p.m., ABC/Ch. 4): Mike refuses to get into the Valentine's Day mood.
Whitney (7 p.m., NBC/Ch. 5): Roxanne's ex-husband is back in town.
Nature (7 p.m., PBS/Ch. 7): Scientists follow a family of urban raccoons.
American Idol (7 p.m., Fox/Ch. 13): Auditions continue.
One Tree Hill (7 p.m., CW/Ch. 30): Haley searches for Nathan.
Suburgatory (7:30 p.m., ABC/Ch. 4): George is nervous about Tessa and Scott being alone together.
Criminal Minds (8 p.m., CBS/Ch. 2): The team investigates casino-related murders in New Jersey.
Modern Family (8 p.m., ABC/Ch. 4): Greg Kinnear guest stars as Phil's business partner.
Nova (8 p.m., PBS/Ch. 7): Separating conjoined twins.
Happy Endings (8:30 p.m., ABC/Ch. 4): Penny wants to dump her new boyfriend; Dave worries his new girlfriend is going to dump him.
CSI (9 p.m., CBS/Ch. 2): The team tracks a murderer with a hair fetish.
Revenge (9 p.m., ABC/Ch. 4): Victoria tries to use Conrad's father (William Devane) against him; the rug gets pulled out from under Charlotte and Emily.
Law & Order: SVU (9 p.m., NBC/Ch. 5): A woman is drugged and sexually assaulted after auditioning for a reality TV show.
Inside Nature's Giants (9 p.m., PBS/Ch. 7): Lions and tigers - no bears, oh my.
Top Chef: Texas (11 p.m., Bravo): The chefs have to navigate the pantry blindfolded.
Hot in Cleveland (11 p.m., TV Land): All the women chase rock-star dreams.
Royal Pains (11 p.m., USA): Divya learns that Raj is moving on.