Tuesday’s TV highlights

SERIES

Knights of Mayhem: Big money is on the line as Charlie and the Knights of Mayhem joust at the Sherwood Forest Faire in Texas, in this new episode (6 and 9 p.m. National Geographic).

Rock Stars: In the premiere of this new dangerous profession series a crew works to stabilize the slopes along a busy highway in the heart of Washington’s Cascade mountains (7 and 10 p.m. National Geographic).

The Biggest Loser: The trainers prepare Thanksgiving dinner in a two-hour episode of the unscripted series (8 p.m. NBC).

90210: Liam (Matt Lanter) hosts Thanksgiving dinner for the gang and is surprised by the arrival of an unexpected guest in this new episode (8 p.m. KTLA).

Dancing With the Stars: At the end of the two-hour season finale, one celebrity and dance-pro partner will be named the winners. Lady Antebellum performs (9 p.m. ABC).

Frontline: The new episode “A Perfect Terrorist” documents David Coleman Headley’s leap from U.S. government informant to a conspirator in the 2008 attack on Mumbai (9 p.m. KOCE).

The Millionaire Matchmaker: A year after breaking her engagement, Patti is ready to look for love again and asks her staff to help her find a new mate in the season finale (9 p.m. Bravo).

Parenthood: Inappropriate behavior at work could have long-term consequences for Adam and Kristina’s (Peter Krause, Monica Potter) marriage in this new episode (10 p.m. NBC).

SPECIALS

CNN Republican National Security Debate: Wolf Blitzer moderates a debate on national security (5, 8 and 11 p.m. CNN).

MOVIES

Red River: John Wayne and Montgomery Clift star as a cattle baron and his adopted son, who embark on a cattle drive in this 1948 classic western (6:45 p.m. TCM).

SPORTS

College basketball: Maui Invitational, semifinal (4 p.m. ESPN and 6:30 p.m. ESPN). CBE Classic, final (7 p.m. ESPN2).

College football: Miami (Ohio) at Ohio (4 p.m. ESPN2).

Hockey: The Kings visit the St. Louis Blues (4:30 p.m. VS).