NCIS Special Agent DiNozzo partners with the NCIS: Los Angeles team to search the city after his prisoner escapes custody on a flight from Singapore to Los Angeles

Photo: Neil Jacobs/CBS

By Nate Millado

The NCIS universe has expanded in the past 18 years—most recently with NCIS: Hawaii—and it's been a blast watching our favorite agents get to play in the same sandbox! These crossover events have treated fans to some pretty epic episodes and inspired pairings. Here's a look back at a few of our faves.

Watch NCIS on Mondays at 9 PM, ET/PT on CBS and streaming on Paramount+.

Watch NCIS: Los Angeles on CBS and streaming on Paramount+.

Stream NCIS: New Orleans episodes on Paramount+.

"Legend" and "Legend: Pt. II" (NCIS)

LL COOL J shouts into his phone while holding a bloodied and unconscious Chris O'Donnell

Sam (LL COOL J, left) rushes to Callen's (Chris O'Donnell, right) side after he is shot by an unknown gunman.

Photo: Danny Feld/CBS

Special Agent Leroy Jethro Gibbs (Mark Harmon) heads to the City of Angels and teams up with his counterparts at the NCIS Office of Special Projects to investigate the death of a Marine—only to uncover a terrorist cell rooted somewhere in downtown L.A. This NCIS two-parter introduced us to the dynamic duo of Sam Hanna (LL COOL J) and G. Callen (Chris O'Donnell). This pair would go on to headline the first NCIS spinoff, NCIS: Los Angeles.

"Random On Purpose" (NCIS: Los Angeles)

Pauley Perrette and Eric Beal having a drink

Abby (guest star Pauley Perrette) drops by NCIS: Los Angeles. Here with Eric Beal (Barrett Foa).

Photo: Sonja Flemming/CBS.

After a Naval engineer is murdered, Abby (Pauley Perrette) notices a pattern linking this case to others—so she heads to Los Angeles to warn the team of the Phantom serial killer.

"Crescent City Pt. I" and "Crescent City: Pt. II" (NCIS/NCIS: New Orleans)

Mark Harmon and Scott Bakula lean on a wrought iron railing in New Orleans

Gibbs (Mark Harmon, left) and NCIS Special Agent Dwayne Cassius Pride (Scott Bakula, right) chase leads in New Orleans after evidence points to a copycat killer.

Photo: Skip Bolen/CBS

Gibbs (Mark Harmon) and NCIS Special Agent Dwayne Cassius Pride (Scott Bakula, right) are on the tail of a copycat of the infamous Privileged Killer in New Orleans, while Pride's NCIS: New Orleans team heads to Washington, D.C. to investigate potential political connections to the case.

"Blame It On Rio" (NCIS: Los Angeles)

Eric Christian Olsen with Bobby Lee and Michael Weatherly holding guns in a warehouse

NCIS Special Agent DiNozzo (Michael Weatherly) partners with the NCIS: Los Angeles team to search the city after his prisoner escapes custody on a flight from Singapore to Los Angeles

Photo: Neil Jacobs/CBS

D.C.-based agent DiNozzo (Michael Weatherly) partners with the L.A. team to search the city after his prisoner escapes custody on a flight from Singapore to Los Angeles. DiNozzo and Marty Deeks hilariously try to one-up each other throughout the episode, proving exactly why NCIS fans love these crossovers!

"Sister City, Parts I and II" (NCIS/NCIS: New Orleans)

\u200bMichael Weatherly in a raincoat over a jacket and tie next to Pauley Perrette in a polka dot coat holding a black umbrella

Michael Weatherly and Pauley Perrette

Photo: Bill Inoshita/CBS

After the passengers and crew of a private plane traveling from New Orleans to Washington D.C. are lethally poisoned, all signs point to the missing chef—Abby's brother, Luca (Tyler Ritter). Gibbs and the D.C. team work with Pride and the New Orleans crew to locate Luca and determine why a private tech company was targeted.

"Pandora's Box, Parts I and II" (NCIS/NCIS: New Orleans)

Scott Bakula stands next to Vanessa Ferlito and Wilmer Valderrama in a brick building

In this two-part crossover event, the NCIS gang teams up to track a stolen terror playbook. Pictured: Scott Bakula as Special Agent Dwayne Pride, Vanessa Ferlito as FBI Special Agent Tammy Gregorio, and Wilmer Valderrama as NCIS Special Agent Nick Torres.

Photo Credit: Skip Bolen/CBS.

Crossovers are always a rollicking good time, and this Mardi Gras–themed conclusion to an NCIS two-parter is no exception! NCIS agents McGee (Sean Murray) and Torres (Wilson Valderrama) travel to New Orleans to partner with Pride and his team in the search for a missing homeland security theoretical terror playbook.

Watch NCIS on Mondays at 9 PM, ET/PT on CBS and streaming on Paramount+.

Watch NCIS: Los Angeles on CBS and streaming on Paramount+.

Stream NCIS: New Orleans episodes on Paramount+.

Julian McMahon as Jess LaCroix, Roxy Sternberg as Sheryll Barnes, Miguel Gomez as Ivan Ortiz, Zeeko Zaki as Omar Adom 'OA' Zidan, and Missy Peregrym as Maggie Bell.

Photo: Mark Schfer/CBS.

By Nate Millado

FBI: International—the globe-trotting iteration of the popular franchise—kicks off Tuesday, Sept. 21, as part of a three-hour crossover premiere event! So you'll get introduced to the Fly Team's special agents with a little help from some friends, including FBI's OA (Zeeko Zaki) and Maggie Bell (Missy Peregrym) and FBI: Most Wanted's Jess LaCroix (Julian McMahon).

Of course, this isn't the first time we've seen our favorite characters from different shows cross paths. Watch rounds up some of our favorite crossover events!

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Pride and Rita tie the knot on the series finale of NCIS: New Orleans.

Photo: Sam Lothridge/CBS.

By Nate Millado

In the Season 3 finale of Magnum P.I., Higgins (Perdita Weeks) bid Aloha/goodbye and set off for Doctors Without Borders with Ethan—as Magnum (Jay Hernandez) grappled with his true feelings for his partner-in-crimefighting! How will the rest of your CBS favorites wrap up their seasons? Watch gives you a sneak peek at series sign-offs for the summer—and a few long-running hits signing off for good.

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Photo Credit: Skip Bolen/CBS.

By Nate Millado

Mardi Gras, as we know it, is off—sadly, another casualty of the coronavirus. But just because there won't be the usual parties and floats parading down Bourbon Street doesn't mean you still can't laissez les bon temps roule (let the good times roll)! Since NCIS: New Orleans is shot in New Orleans, you can feel the energy and authenticity of the city in every frame. So here's your chance to visit the Big Easy without leaving your living room couch. Celebrate Fat Tuesday with these 10 episodes (beads not included).

Stream NCIS: New Orleans episodes on Paramount+.

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