NCIS Episode 400 Photos: “Everything Starts Somewhere” NCIS Episode 400 Photos: “Everything Starts Somewhere”
Preview images for NCIS Episode 400 "Everything Starts Somewhere" with guest stars Sean Harmon as Young Gibbs and Adam Campbell as Young Ducky NCIS Episode 400 Photos: “Everything Starts Somewhere”

Adam Campbell and Mark Harmon’s son Sean Harmon are among the guest stars in the 400th episode of NCIS airing tonight (November 24) on CBS. The episode is called “Everything Starts Somewhere” and we get to see what happened when Young Gibbs first met Young Ducky. Here’s how CBS describes it:

Flashbacks reveal the murder case that first introduced young Gibbs (Sean Harmon) to NCIS and his introduction to young, new-to-America Ducky (Adam Campbell), on the 400th episode of NCIS, Tuesday, Nov. 24 (8:00-9:00 PM, ET/PT) on the CBS Television Network.

Some preview images can be found below.

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“Everything Starts Somewhere” – Flashbacks reveal the murder case that first introduced young Gibbs (Sean Harmon) to NCIS and his introduction to young, new-to-America Ducky (Adam Campbell), on the 400th episode of NCIS, Tuesday, Nov. 24 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Pictured: David McCallum as Medical Examiner Donald "Ducky" Mallard. Mark Harmon as NCIS Special Agent Leroy Jethro Gibbs, Diona Reasonover as Forensic Scientist Kasie Hines. Photo: Sonja Flemming/CBS ©2020 CBS Broadcasting, Inc. All Rights Reserved.

NCIS stars Mark Harmon (NCIS Special Agent Leroy Jethro Gibbs), Sean Murray (NCIS Special Agent Timothy McGee), Emily Wickersham (NCIS Special Agent Eleanor “Ellie” Bishop), Wilmer Valderrama (NCIS Special Agent Nicholas “Nick” Torres), Maria Bello (NCIS Special Agent Jaqueline “Jack” Sloane), Brian Dietzen (Medical Examiner Jimmy Palmer), Diona Reasonover (Forensic Scientist Kasie Hines), Rocky Carroll (NCIS Director Leon Vance), and David McCallum (Dr. Donald “Ducky” Mallard).

Guest stars in NCIS Episode 400 include Adam Campbell (Young Ducky), Sean Harmon (Young Gibbs), Vito D’Ambrosio (Jonny Zucado), Thomas Crawford (Doctor Walter Magnus), Dajuan Johnson (NIS Special Agent Edward Scott), Gabrielle Walsh (NIS Special Agent Michelle Stamos), Matthew Furfaro (Young Jonny Zucado), Louis Mustillo (Emilio “Freckles” Zucado), Jered Solow (Young Freckles), Franco Fox (Henchman), and Ben Turner Dixon (Young Franks).

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Craig Byrne, Editor-In-Chief

KSiteTV Editor-In-Chief Craig Byrne has been writing about TV on the internet since 1995. He is also the author of several published books, including Smallville: The Visual Guide and the show's Official Companions for Seasons 4-7.