Anastasia Kolcheck won't be particularly pleased to see the NCIS: Los Angeles team during "Chernoff, K."

'NCIS: LA' Season 6: Finale Script page Leaked, Arkady & Hetty Go Head-To-Head

The season 6 finale will bring viewers face-to-face with Arkady's (Vyto Ruginis ) daughter, and Callen (Chris O'Donnell) will learn that Anna (Bar Paly) is more than capable of taking care of her self.

Monday's episode will see the OSP team head to Russia in search of Ivan Karposev (Paul Duke), Anna, and Arkady's missing oil. One there, Callen and Co. will track a fleeing Karposev to an empty warehouse where they will fall into a stand off with Anna (see video below).

'NCIS: LA' Season 6: Finale To Have A Post Credit Scene? EP Teases 'Chernoff, K' Ending

Callen, who has been dating Joelle since season 5, may find a new love interest in the gun toting blond. O'Donnell and series creator Shane Brennan have been teasing a mysterious romantic option for the unfettered agent and with one episode left in the season, it's about time this mystery woman stepped out of the shadows.

"I believe there is a new love interest for Callen coming up," O'Donnell teased while speaking with HuffPost Live, last month.

"[It] ends up being connected to someone that we've seen in several past episodes," O'Donnell told TV Guide. "There's more to the story."

Find out more when NCIS: LA airs it's season finale Monday at 10 p.m. ET on CBS.