A new episode is on tonight at 8 pm on the CW Network.
The episode is titled Let The Right One In.

Below is a synopsis and trailer for the episode:

STEFAN IS FORCED TO MAKE A FRIGHTENING DECISION – When Stefan and Damon make a dangerous new enemy, Stefan suddenly finds himself in a perilous situation. Damon and Elena try to convince Alaric to work with them to help Stefan. Matt is hopeful that his mom, Kelly, may be back to stay. After her car breaks down in a storm, Caroline makes a horrific discovery that shocks everyone in town.