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One Step Forward
NCIS
Season
Episode

21
First aired
May 1, 2018.
Written by
Directed by
Previous episode
One Step Forward is the 21st episode of NCIS Season 15 and also the 351st episode of the entire NCIS series.

Synopsis

Sara Carter begs Gibbs to investigate her mother's murder as she believes the local authorities convicted the wrong man while Abby is awarded a dinner reservation for two to a brand-new five-star restaurant in an igloo and has to decide which co-worker deserves to go with her.

Prologue

Act One

Act Two

Act Three

Act Four

Act Five

Cast

Series Regulars

Name Portrayed by Role
Leroy Jethro Gibbs Mark Harmon Special Agent in charge of the NCIS Major Case Response Team.
Abigail Sciuto Pauley Perrette Chief Forensic Specialist for the NCIS Major Case Response Team.
Timothy McGee Sean Murray Senior Special Agent and second-in command of the NCIS Major Case Response Team.
Nicholas Torres Wilmer Valderrama Special Agent for the NCIS Major Case Response Team.
Eleanor Bishop Emily Wickersham Special Agent for the NCIS Major Case Response Team.
James Palmer Brian Dietzen Assistant Medical Examiner for the NCIS Major Case Response Team.
Leon Vance Rocky Carroll Director of NCIS.
Jacqueline Sloane Maria Bello NCIS Special Agent.
Donald Mallard David McCallum Chief Medical Examiner for the NCIS Major Case Response Team. Despite being credited, McCallum does not appear in this episode.
Clayton Reeves Duane Henry Interagency Liaison between MI6 and NCIS.

Other Cast

Name Portrayed by Role
Sara Carter Skye P. Marshall Theo Carter's mother.
Edward Olson Joseph Lyle Taylor Detective.
Scott Gunderson DeVaughn Nixon
Diane Boyle Briana Lane
Robert Flynn Jonah Wharton
Jax Wesley Dedan Donovan
Theo Carter Shamori Washington Sara Carter's son.
Kent Marshall Mark Engelhardt
Security Guard (One Step Forward) Darren Dupree Washington
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