NCIS: Los Angeles Deeks might weave a web of deception in episode 18.

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The untitled episode (filming as 616) is shaping up to feature plenty of Deeks-centric drama, and executive producer John Peter Kousakis gave fans a new teaser on Friday.

"#HappyFriday Prep has begun on E616," Kousakis tweeted. "[Andrew Bartels] is scribe and Dir.by [Tony Wharmby]. The action is extraordinary. The mystery lies w/Deeks."

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Bartels quickly responded to the announcement, telling Kousakis he liked "the choice of the word 'lies.'"

The LAPD detective has only found himself in major trouble once before - enough to get him fired from the Office of Special Projects - but that incident was merely a fabricated ruse concocted by Hetty. This time, however, the unflappable leader will be at a loss.

"Prep of E616 written by [Andrew Bartels] begins this week," executive producer John Peter Kousakis teased in January. "All I can say...What has Deeks done? Even Hetty is in a quandary. #StayTuned #NCISLA."

Find out more when NCIS: LA airs Mondays at 10 p.m. ET on CBS. Click the video below to see a preview for the series' next episode, "Black Wind."

Tags: NCIS: LA NCIS: Los Angeles television CBS