NCIS: Los Angeles has yet to air it's season 5 finale, but actors and execs alike are already promising a stellar season 6 plotline.

Titled "In Too Deep," the upcoming finale will leave viewers in suspense as it spills over into next September's premiere. Currently filming, "In Too Deep: Part 2" is expected to kick off season 6 by wrapping up Sam and Callen's "extreme jeopardy" situation, dealing with Hetty's (Linda Hunts) inquiry, and furthering the Desni relationship (find out more here).

"S6 [teaser]...We mastermind another great season of intrigue and suspense. You will be rattled. # NCISLA #willnotdisappoint #staytuned," said executive producer John Peter Kousakis.

It looks like Deeks (Eric Christian Olsen) and Kensi's (Daniela Ruah) relationship will hit a slight speed bump (yes, another one) when DEA Agent Talia (Mercedes Masohn) resurfaces after the events of "Fish Out of Water." Will Talia and Kensi get along, or will their feelings for Deeks get in the way?

"Big #NCISLA "Kensi and Deek's" shoot today. Kensi's bonding, but with who?" teased Dennis Smith, director of "In Too Deep: Part 2," on Tuesday.

However, Ruah previously joked that it is Callen, not Deeks, who will cause Kensi and Talia to be at odds (see set photo above).

NCIS: LA airs Tuesdays at 9 p.m. ET on CBS. Click the video below to see a preview for the series' next episode, "One more Chance."

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