Vampire Diaries (8pm, CW) - Katherine's past is explored in 1490 Bulgaria, and Damon tries to uncover the real purpose of the mysterious moonstone.
Community (8pm, NBC) - Everyone is a suspect when Annie's favorite pen goes missing, so the group lock themselves in until the thief is found. Jeff heads up the investigation but Abed and Troy (left) aren't as invested in the mystery because they want to go to a nearby puppy parade.
30 Rock (8:30pm, NBC) - Jack manipulates a congressional election to help a candidate (John Slattery, "Mad Men"), thereby leveraging an advantage for the network. Meanwhile, a perfect pair of new jeans gives Liz confidence.
Grey's Anatomy (9pm, ABC) - The surgeons work to save a dying Middle East political figure amid tightened security at the hospital. Also, Alex makes a bad first impression on a new pediatrics attending (Peter MacNicol) and Cristina decides to decorate her new place and throw a housewarming party.
The First 48 (9pm, A&E) - Detectives in the terrifying crime mecca of Charlotte, North Carolina, investigate the murder of a man who was shot behind his girlfriend's house. Charlotte is one of the cities regularly featured in the current season of "The First 48."
Burn Notice (10pm, USA) - In the midseason return, Michael (right) tries to prevent a bombing arranged by a lawyer out for revenge against a local gang. Elsewhere, Michael and Jesse must track down a highly sensitive document that has been stolen.