Brian Ames

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 (recurring guest star Melinda Clarke), may be back to stay. And, after Caroline's car breaks down in a storm, she makes a horrific discovery that shocks everyone in town.

A gunman opens fire at a local college, sending mass casualties to the hospital; Arizona's return is not warmly received.

The CBI team heads out to wrangle suspects in a run-down Wild West tourist town when the owner is found dead. Meanwhile, Kirkland tries to find out how much Patrick knows about Red John.

The lead suspect in a murder investigation is a woman that Gibbs' friend met on a dating site; Sloane has a secret admirer on Valentine's Day.

Nate is at odds with Lisa's family; David and Keith look for ways to start over; Federico seeks out a priest for absolution.