Great Wide Open (episode)

Great Wide Open is the fourth episode of NCIS Season 19 and the 418th episode of the entire NCIS series.
This episode also marks the final appearance of Mark Harmon (Leroy Jethro Gibbs) as a longest-running main cast member, as well as the final episode to feature Harmon and David McCallum (Ducky Mallard) together before McCallum’s death in September 2023.
==Synopsis==
Gibbs and McGee head to Alaska while the team works at home to uncover the conspiracy behind the serial killer with the case prompting Gibbs to make a life-changing decision.
==Prologue==
==Act One==
==Act Two==
==Act Three==
==Act Four==
==Act Five==
== Major Events==
*Gibbs resigns from NCIS for good and also decides to stay in Alaska.
==Trivia==
*It was the final episode to feature Leroy Jethro Gibbs to date in NCIS, until Mark Harmon appeared as Older Gibbs in prequel series NCIS: Origins premiere episode Enter Sandman, excluding archive footage in The Stories We Leave Behind and A Thousand Yards in Season 21.
==Cast==
===Series Regulars===
Name 	Portrayed by 	Role
Leroy Jethro Gibbs	Mark Harmon 	Ex Special Agent Assigned to NCIS Major Case Response team. (Indefinitely Suspended)
Timothy McGee 	Sean Murray 	Senior Agent for the NCIS Major Case Response Team. Currently in charge.
Nicholas Torres 	Wilmer Valderrama	Special Agent for the NCIS Major Case Response Team.
James Palmer 	Brian Dietzen 	Chief Medical Examiner for the Major Case Response Team.
Kasie Hines 	Diona Reasonover 	NCIS Forensic Specialist.
Jessica Knight 	Katrina Law 	NCIS Special Agent.
Donald Mallard 	David McCallum 	NCIS Historian.
Leon Vance 	Rocky Carroll 	NCIS Director.
Alden Parker 	Gary Cole 	FBI Special Agent.
===Recurring Cast===
Name 	Portrayed by 	Role
Marcie Warren 	Pam Dawber 	Journalist.
Phil Hanover 	John Hensley 	Husband of Jennifer.
Sonia Eberhart 	Valarie Pettiford 	CEO of Sonova.
Ramirez (Road to Nowhere)	Karina Noelle Castillo	Agent with the FBI.
===Guest Cast===
Name 	Portrayed by 	Role
Tunu Alonak 	Wayne Charles Baker	Alaskan fisherman.
Wayne Sweeney 	Erik Passoja 	FBI Deputy Director.
Melanie Stafford	Nikki McCauley 	
Nina Bradshaw 	Kimberly Christian 	
  v - [ e] - d NCIS Season 19
♦ Blood in the Water (episode) ♦ Nearly Departed (episode) ♦ Road to Nowhere (episode) ♦ Great Wide Open (episode) ♦ Face the Strange (episode) ♦ False Start (episode) ♦ Docked (episode) ♦ Peacekeeper (episode) ♦ Collective Memory (episode) ♦ Pledge of Allegiance (episode) ♦ All Hands (episode) ♦ Fight or Flight (episode) ♦ The Helpers (episode) ♦ First Steps (episode) ♦ Thick As Thieves (episode) ♦ The Wake (episode) ♦ Starting Over (episode) ♦ Last Dance (episode) ♦ The Brat Pack (episode) ♦ All or Nothing (episode) ♦ Birds of a Feather (episode)
Category:NCIS Episodes
Category:NCIS Season 19 Episodes
Category:NCIS Episodes written by David J. North
Category:NCIS Episodes written by Brendan Fehily
Category:NCIS Episodes directed by Terrence O'Hara