NCIS will return with a new episode on March 24 called Status Update, which will guest star Margo Harshman as Delilah, Timothy McGee's (Sean Murray) girlfriend.

Marisol Nichols Back On Set Of 'NCIS'

On Tuesday, CBS released a press release about this upcoming episode, in which the NCIS team will team up with Delilah and the Department of Defense since a clue in a murder case they are investigating connects to a terror group Delilah and the Department of Defense have been tracking from Dubai.

Gibbs (Mark Harmon), Tony DiNozzo (Michael Weatherly), Eleanor "Ellie" Bishop" (Emily Wickersham) and McGee will discover the calling card of the terror group on the dead body of a thief who is found in a Marine's home.

Pauley Perrette Loves Portraying Abby On 'NCIS'

Harshman has not been on the show as Delilah since last season with her last appearance being in episode 20 Page Not Found.

She was on set last month filming though. Murray even shared a photo of himself on the NCIS set with her.

He called her "one of the coolest people ever."

Back in January, showrunner and executive producer Gary Glasberg told FOX411 that despite McGee and Delilah's long distance they are still going strong.

"We are excited about seeing Delilah resurface," Glasberg dished.

NCIS airs on Tuesdays at 8 p.m. ET on CBS.

Tags: NCIS television CBS Margo Harshman Sean Murray