Highlights

Highlights

Tonight, CNN covers the Democratic presidential primary in West Virginia from 7 to 11.

Chinese Ambassador Zhou Wenzhong discusses Monday's earthquake in central China on "The NewsHour With Jim Lehrer" (Channel 26 at 7).

David Cassidy-esque David Archuleta, Daughtry-like David Cook and the Broadway-suited Syesha Mercado sing it out on "American Idol" (Channel 5 at 8).

A mysterious killer targets Jimmy Palmer on "NCIS" (Channel 9 at 8); problem is, only Jimmy can recognize the culprit.

Results night on "Dancing With the Stars" (Channel 7 at 9) sends the competition's eighth celebrity packing.

On "Shark" (Channel 9 at 9), a singer is killed soon after leaving the Playboy Mansion, and Sebastian and the team are on the case.

One of three couples wins $250,000 in the finale of "Beauty and the Geek" (Channel 50 at 8).

On "Reaper" (Channel 50 at 9), the Devil (Ray Wise) shows up to investigate when a condemned soul keeps returning to Earth.

Two season finales at 10: Detectives Benson and Stabler hunt down one of their own when he becomes a suspect in a reopened murder investigation on "Law & Order: Special Victims Unit" (Channel 4 at 10); and Lindsay risks life and romance when the "Women's Murder Club" (Channel 7 at 10) hunts a serial killer.

With just a few weeks left in the crabbing season, the deckhands on "Deadliest Catch" (Discovery at 9) are focused on their hauls and their paychecks.

In the finale of the British competitive cooking show "Last Restaurant Standing" (BBC America at 9), two couples travel to France for the chance to go into business with French chef Raymond Blanc.

The trainers of "Work Out" (Bravo at 10) head for a grueling weekend retreat in Northern California, where a chain-smoking gym client frays nerves and a group therapy session ends in tears and yelling.