ET was on the set of the season 20 finale and spoke with Murray, Valderrama, Katrina Law and Gary Cole about 20 seasons.
Weatherly took to Twitter over the weekend to share the news.
‘NCIS’ airs Mondays on CBS.
ET was on the set with the stars of the long-running procedural as they toast to their 450th episode milestone.
‘NCIS,’ ‘NCIS: Hawaiʻi’ and ‘NCIS: Los Angeles’ come together in the three-hour crossover event airing tonight on CBS.
The three-hour crossover event airs Monday.
'Seeing another universe meld into another universe, it's like Spider-Man swinging into Batman,' 'Hawaii' star Jason Antoon previews.
The 'NCIS,' 'NCIS: LA,' 'NCIS: Hawaii' three-hour crossover event begins Monday, Jan. 9 at 8 p.m. ET/PT on CBS.
‘NCIS,’ ‘NCIS: Hawaiʻi’ and ‘NCIS: Los Angeles’ come together for the first time in the three-hour crossover airing on Jan. 9 on CBS.
Chambers died last week while out shopping in Newport Beach, California.
The actress and writer previews Monday's holiday episode with ET. Plus, watch an exclusive clip!
A new episode airs Monday, Nov. 21 at 9 p.m. ET/PT on CBS.
‘NCIS: Hawaii’s Noah Mills joins ET for Hawaii week at Sheraton Waikiki in Honolulu.
The franchise star left the series four episodes into season 19.
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