Masterpiece Mystery: The Lady Vanishes (9pm, UNC-TV) - A young socialite (Tuppence Middleton) on her way home investigates the disappearance of a fellow train passenger (Selina Cadell), whom no one else seems to remember seeing. Joining in the search is an engineer (Tom Hughes) who has eyes for her. Based on the 1936 Ethel Lina White novel, "The Wheel Spins," which was loosely adapted by Alfred Hitchcock for his 1938 "The Lady Vanishes" film.
Breaking Bad (9pm, AMC) - Walt tries to cover his tracks while Skyler's past catches up with her. Meanwhile, Jesse continues to struggle with his guilt.
True Blood (9pm, HBO) - In the sixth-season finale, Jason (Ryan Kwanten, right) feels a vampire attraction firsthand. Also, Bill finds that salvation isn't free, and Sookie (Anna Paquin, right) considers her future with Warlow as a new crisis poses a threat to humans and vampires alike.
Bar Rescue (9pm, Spike) - An establishment called Cliques near Fort Bragg gets some help fixing its bad reputation.
The Great Food Truck Race (9pm, Food) - Season 4 begins in Beverly Hills, where eight competing teams are instructed to prepare a signature dish that must be sold for at least $20. Later, they are given a second challenge to complete in San Francisco.
Whodunnit (9pm, ABC) - The killer is revealed and a winner is named in the Season 1 finale.
Oprah's Next Chapter (9pm, OWN) - Oprah tries to talk some sense in to Lindsay Lohan.
Crossing Lines (9pm, NBC) - Both parts of the two-part Season 1 finale air tonight. Louis and his wife continue to deal with the death of their son, and Dorn discovers new information in the case. Later, the season ends with Hickman's life in danger.
Low Winter Sun (10pm, AMC) - A police search of McCann's house turns up evidence that could alter the case, while Maya and Damon reevaluate their plans.