‘90210’
7 p.m., WGN-Ch. 9
Navid (Michael Steger) decides to confront Adrianna (Jessica Lowndes) about her drug use. Debbie and Harry (Lori Loughlin, Rob Estes) are surprised when Annie (Shenae Grimes) wants to invite Jasper (guest star Zach Sherman) over for dinner. Ivy and Dixon (Gillian Zinsler, Tristan Wilds) join Navid in trying to help Liam (Matt Lanter) tell Naomi (AnnaLynne McCord) the truth about Jen (Sara Foster).
‘The Biggest Loser’
7:30 p.m., WMAQ-Ch. 5
Fashion consultant Tim Gunn (“Project Runway”) and hairstylist Tabatha Coffey (“Tabatha’s Salon Takeover”) help give the remaining six contestants makeovers before they give motivational speeches about their weight loss journeys. The contestants reveal their new looks to their loved ones, then face a high-flying challenge that will earn the winner a two-week trip to a fitness resort in southern Utah.
‘Frontline’
9 p.m., WTTW-Ch. 11
Neda Soltani became the face of a powerful movement opposing Islamic hard-liners after she was shot and killed on the streets of Tehran, Iran, during protests over the country’s presidential election last summer, after her death was captured on a cell-phone camera and uploaded to the Web. “A Death in Tehran” grippingly investigates the life and death of this woman whose memory is cherished by those seeking to keep the reform movement alive.
‘Late Show With David Letterman’
10:35 p.m., WBBM-Ch. 2
Actress Penelope Cruz; World Series of Poker champion Joe Cada; the Script performs.
‘The Tonight Show With Conan O’Brien’
10:35 p.m., WMAQ-Ch. 5
Actress Jane Lynch; 50 Cent performs.
