NCIS: Los Angeles is nearing the end of filming, and the series has released the title of one of season 6's final episodes.

'NCIS: LA' Season 6 Spoilers: Will Deeks 'Fighting Shadows' Trouble Come From Densi? Team Uncovers The Truth

Titled "Beacon," according to Spoiler TV, episode 21 will begin filming on Monday.

The cast and crew are keeping plot details locked up tight for now, but it was recently announced that NCIS: LA vet Diana Valentine will return to take the helm. Valentine has directed Callen's (Chris O'Donnell) crew five times, including season 6's "Forest for the Trees" and "The 3rd Choir."

'NCIS: LA' Season 6 Spoilers: Origins Of Major Relationship Revealed, Will It Involve Callen & Hetty?

"Beacon" will come in the wake of "Fighting Shadows," "Blaze of Glory," and "Rage."

NCIS: LA will take a weeklong break before airing its next episode, "Fighting Shadows," which viewers can catch on March 23. Deeks (Eric Christian Olsen) and Kensi's (Daniela Ruah) romance will be in trouble when the CBS drama returns as Hetty's (Linda Hunt) sudden decision to pair Sam (LL Cool J) with Kensi and Deeks with Callen will set off alarm bells in Densi's collective heads. It appears the boss has uncovered their unauthorized workplace romance, which is not surprising, considering.

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' latest episode.