NCIS: Los Angeles will bring in the FBI for episode 19.

'NCIS: LA' Season 7: Russian Episode Title Revealed, Find Out Character Will Return

Hetty's (Linda Hunt) team have collaborated with the Bureau before, and when an upcoming case calls for an extra set of eyes, the OSP will welcome back FBI Agent Lisa Rand (Alicia Coppola).

Coppola announced her return on Tuesday as the CBS drama entered the third day of filming for one of season 7's final episodes.

'NCIS: LA' Season 7: Are Sam's Children In Danger? EP Teases Earth-Shattering 'Challenge' For LL Cool J

Coppola previously aided the OSP when a teen was buried alive in season 2's "Little Angels" and again when Callen (Chris O'Donnell) and Co. had to infiltrate a white supremacist group in last year's "Rage."

Unfortunately, little is known about the upcoming episode. While we wait for details to emerge, NCIS: LA will undergo several two-week breaks. The next episode, titled "Matryoshka," will air on Feb. 8.

Catch NCIS: Los Angeles Mondays at 10 p.m. ET on CBS. Click the video below to see a preview for the series' latest episode.