NCIS: Los Angeles's Kensi is about to go missing, and it looks like it will be two episodes before the team heads out to find her.

Will Kensi Be Tortured On 'NCIS: LA'? Shane Brennan Dishes On Dangerous Mission & The Fate Of Densi

The Afghanistan-based agent will go off the grid during episode 17, "Between the Lines," and her disappearance will begin to trouble Assistant Director Granger (Miguel Ferrer).

However, Kensi's (Daniela Ruah) teammates won't launch a rescue mission until episode 19, "Spoils of War." Billed as a game changer for the Densi relationship, the Frank Military penned script should work to wrap up Kensi's overseas arc.

 Another Clue To Callen's Past Emerges In 'Tuhon' On 'NCIS: LA'

As the search for the White Ghost and the NCIS mole potentially reaches an end, the CBS drama will be hosting a slew of guest stars. While many of these roles have yet to be revealed, the visiting actors have been dropping a few hints about their involvement via Twitter.

Thanks to these little spoilers, it looks like Teen Wolf's Matthew Del Negro will be working alongside Callen (Chris O'Donnell), Deeks (Eric Christian Olsen), and Kensi while Nina Nelson, Dylan Ramsey (The Wanderers), and Mustafa Haidari (Hearts and Minds) will also star.

Scroll through the gallery above to see what the guest stars were up to during filming, and click the video below to see a preview of this week's episode, "Tuhon."

NCIS: LA airs Tuesdays at 9 p.m. ET on CBS.