NCIS: Los Angeles' Deeks and Kensi should grab their tinfoil hats - the partners will infiltrate a brainwashing cult in "An Unlocked Mind."

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Directed by NCIS: LA's own Chris O'Donnell (Callen), episode 7 will toss Densi into deep water when the OSP is tasked with rescuing a fellow government employee from the ranks of a nefarious cult. Color us intrigued.

"Kensi (Daniela Ruah) and Deeks (Eric Christian Olsen) go undercover as cult members to rescue a former Department of Defense employee brainwashed into revealing classified information, as the rest of the team works to prevent the cult from selling the government secrets," CBS teased on Thursday.

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Called the Church of the Unlocked Mind, the will be lead by Lee Ashman, as played by Supernatural and The Original's Sebastian Roché. With Department of Defense secrets about to fall into the hands of a Chinese spy, how will Hetty's (Linda Hunt) team manage to trap this undoubtedly slippery character?

Before fans can find out, CBS will air "Unspoken" on Nov. 2. Sam's (LL Cool J) former partner has landed himself in NCIS's crosshairs and Agent Hanna will have to decide if the former addict really has abandoned his loyalties.

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.

Tags: NCIS: LA NCIS: Los Angeles television CBS