Kensi and Deeks reconnect and Mercury is in retrograde
Sam: What happens when Mercury is in retrograde?
Kensi: Deeks gets retro-annoying.
Kensi: Oh, come on. Problems happen all the time, and three times a year, we have to blame it on Mercury? Ridiculous.
Sam: Sounds like an urban myth.
Callen: It's more like a superstition.
Deeks: Don't do it, don't taunt Mercury.
Possible terrorist attack
The team along with Homeland Security investigate the death of a security guard who worked at a train yard and they soon discover that they're searching for a mastermind who may be planning to launch a terrorist attack on a train.
Deeks in action
Kensi and Deeks
Getting the job done. Piece of cake.
Episode 8 "Fallout"
When an antiterrorism device is stolen, the team must quickly find the suspect and the device before an attack is made against Los Angeles.
The search is on
Deeks: We've got a nuke in a haystack.
Cold War Part 2?
Russia, an old nemesis, emerges as the culprit
Eric helps Sam and Callen
Episode 9 "Recovery"
While investigating the death of a Naval officer, Kensi and Deeks go undercover at a rehab center.
Surveillance tapes lead them to another patient
Sam finds her hanging from the roof!
Kensi: Because once again you're trying to say something without actually saying it. And it's driving me nuts.
Deeks: I think you lost me.
Kensi: No. I don't think I did. I think you know exactly what I'm talking about.
Deeks: Do I?
Kensi: Damn it, Deeks, you asked me out on a date without actually asking me out on a date. Now, if this keeps going this way and we can't communicate, and we've been over this -- you never say what you mean, and if this is the way it's gonna be, then I don't know how we're ever gonna...