Reports have confirmed fan-favourite agents from each team will be coming together in the special event.
They will be teaming up to take down a deadly hitman, who already has a number of NCIS agents in his crosshairs.
Fans should expect to see new team leader Alden Parker (Gary Cole), Nick Torres (Wilmer Valderrama) and Jessica Knight (Katrina Law) finally team up with G Callen (Chris O’Donnell) and Sam Hanna (LL Cool J) from the LA team.
Plus, Tennant, Lucy Tara (Yasmine Al-Bustami) and Kate Whistler (Tori Anderson) from the Hawaii task force will also be catching up with their new allies.
source: express.co.uk