All the crossover cameos planned for NCIS' 1000th episode

NCIS is hitting quadruple digits. After two decades of dominance on CBS, the procedural drama is reaching the staggering milestone of 1,000 episodes. A number of such enormous magnitude has to come with a lot of fanfare, and the show's writers and producers are pulling out all the stops.

NCIS is not only bringing back OG cast members, but the show will be bringing in characters who appear (or appeared) in other NCIS titles like NCIS: Hawai'i and NCIS: Los Angeles. It wasn't that long ago that the franchise lined up an ambitious three-part crossover between these shows, but a lot has changed since.

NCIS: Los Angeles has been canceled, Hawai'i has become the second-longest-running show in the franchise, and NCIS: Sydney has broadened international appeal. The franchise has also announced plans to launch more spinoffs and prequels, so now is a perfect time to consolidate power and give fans an ambitious, crossover-heavy storyline that reflects on the 999 episodes that preceded it.

NCIS: LA star Daniela Ruah will return

“Game of Drones” – The NCIS team searches for a suspect and their motive following the bombing of a large facility where military combat drones are assembled. Also, Callen and Kilbride get troubling news about a body found in Syria, on the 14th season premiere of the CBS Original series NCIS: LOS ANGELES, Sunday, Oct. 9 (10:00-11:00 PM, ET/PT) on the CBS Television Network, and available to stream live and on demand on Paramount+. Pictured (L-R): Caleb Castille (Special Agent Devin Rountree) and /

Daniela Ruah might be the single most important NCIS alum on April 15. Not only will she be directing the night's episode of NCIS: Hawai'i, but she will be reviving her NCIS: Los Angeles character for the 1,000th episode.

The actress told Parade that she was honored to come back and make a cameo as Kensi Blye, especially since NCIS: LA is the one franchise title that's no longer active. She described the experience shooting the episode as "wonderful" and assured NCIS: LA fans will be pleased:

"It was a complete honor. Being on NCIS: LA since the pilot and now being able to just give a little touch on the 1,000th episode, it’s crazy."

NCIS: Hawai'i star Vanessa Lachey will cameo

“Run and Gun” – After passing her medical and psych evaluations, Tennant is surprised to see Sam Hanna conducting her final interview to clear her return to work. Also, when the team discovers a breach in the U.S. Marshal’s database, Sam joins Tennant in Las Vegas to locate the hacker, on part one of the season three premiere of the CBS Original series NCIS: HAWAI’I, Monday, Feb. 12 (10:00-11:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+ (live and on demand for /

An NCIS crossover wouldn't be complete without an appearance from Hawai'i stalwart Vanessa Lachey. It's been confirmed that Lachey's character, Jane Tennant, will not be traveling to the D.C. office (the setting of the OG NCIS) to work on the case in person, but she will be on hand to help in a different capacity.

Ruah and Lachey first met during the aforementioned three-part NCIS crossover, and the two women have remained close ever since:

"Vanessa and I have a great relationship, we’ve had a good relationship since the crossover. We just kind of clicked. I think she and I have a lot in common as humans."

Ruah and Lachey are the only NCIS stars who have been confirmed to appear in the crossover thus far, but actress Diona Reasonover did allude to there potentially being more as the episode unfolds. She told Parade that the 1,000th episode will emphasize lots of different NCIS "locations," and that they will ultimately lead to something that has never happened in NCIS before.”

We can't wait to find out what that something is! NCIS' 1,000th episode airs Monday, April 15 at 9 PM ET.

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