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NCIS· Season 20 · Episode 16

Butterfly Effect

S20E16·7.9·March 13, 2023·1h·CBS

The NCIS team jumps into motion to investigate who is responsible for a potential bio terror attack at a strip mall parking garage. Also, Knight's father deals with a health scare while in Japan.

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#5In Season 20of 22 rated episodes
#146All-timeof 507 rated episodes
+0.2vs season avgSeason 20 averages 7.7
2023First airedMarch 13, 2023

Guest stars

Brigid BrannaghBrigid Brannaghas Senator Constance Miller
Sonny ValicentiSonny Valicentias Nate Billings
Tina HuangTina Huangas Captain Boggs
Johnny Jay LeeJohnny Jay Leeas Petty Officer Sheehan
Julianne CollinsJulianne Collinsas Dorothy Quinlan
Al RodrigoAl Rodrigoas Police Captain Martinez
Dominic PaceDominic Paceas George Barlow
Jimmy Walker, Jr.Jimmy Walker, Jr.as Former Army Sgt. William "Shelly" Jolson
Greg BensonGreg Bensonas Phillip Legrand

Crew

Tawnia McKiernanTawnia McKiernanDirector
Christopher J. WaildWriter

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