[WATCH] 'NCIS: Los Angeles' Sneak Peek: Arkady Warns the Team That Sokolov Is Back

The Kolchecks are back in NCIS: Los Angeles season 9 episode 18, though you may be seeing more of one of them than you thought you would. (Just check out the sneak peek CBS has released.)

"Vendetta" sees Callen and Sam join forces with Anna and ATF when Arkady warns the team that a notorious international weapons dealer has returned to the states. The case requires Eric to go undercover (alone) as a bank IT technician.