The Closer (7 and 9 p.m., TNT): Three soldiers who recently returned from Afghanistan are gunned down.

History Detectives (8 p.m., Ch. 7): Cartoon drawings and cels are among the items the detectives investigate.

Lie to Me (8 p.m., Ch. 13): The search for a missing woman leads to criminal activity in the porn industry.

Secret Life of the American Teenager (9 p.m., ABC Family): Ricky takes Amy on a date.

Huge (10 p.m., ABC Family): Parents weekend continues in the season finale. (There's been no official announcement, but the odds of a Season 2 aren't looking good.)

Weeds (11 p.m., Showtime): Nancy finds work in Seattle. (Rated TV-MA)

The Big C (11 p.m., Showtime): Cathy attends a support group for cancer patients. (Rated TV-MA)

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