Trevor Peterson

Elena puts herself in a dangerous position as she searches for the truth about Katherine's past and what her own future may hold. Knowing that Stefan would never agree to her plan, Elena swears Caroline to secrecy. Damon uses a newfound confidant to help him try to discover the real purpose and power of the moonstone. Jeremy and Bonnie meet Luka Martin (guest star Bryton James – The Young and the Restless, Family Matters), a new student with a surprising family history.

Elena decides to take matters into her own hands and offers a tempting incentive to Rose (recurring guest star Lauren Cohan) for her help. When things take an unexpected turn, however, Rose calls on Damon to deal with the plan Elena has set in motion. Jeremy's reckless attempt to help Bonnie retrieve the moonstone lands him in a life-threatening position and forces Stefan to put himself in danger. Meanwhile, Bonnie and Luka (recurring guest star Bryton James) form a closer connection, and Tyler shows Caroline the Lockwood cellar, where she makes a discovery that leaves them both terrified.

A seemingly normal family is targeted in a brutal grenade attack, leaving Horatio and the team to figure out why.