NCIS Database

True Believer is the 8th episode of NCIS Season 18 and also the 406th episode of the entire NCIS series.

This episode also features the final appearance of Maria Bello (Jack Sloane).


When Sloane's name is discovered in Afghanistan at the site of an abandoned bus with a dead driver, Gibbs accompanies her on a trip to find a group of girls who were kidnapped from the bus while McGee, Bishop and Torres track down a hacker who emailed compromising information to the Taliban.


Act One[]

Act Two[]

Act Three[]

Act Four[]

Act Five[]

Gibbs outside the building.

Major Event[]

  • Sloane resigns from NCIS and chooses to remain in Afghanistan.



Series Regulars[]

Name Portrayed by Role
Leroy Jethro Gibbs Mark Harmon Special Agent in charge of the NCIS Major Case Response Team.
Timothy McGee Sean Murray Senior Special Agent and second-in command of the NCIS Major Case Response Team.
Eleanor Bishop Emily Wickersham Special Agent for the NCIS Major Case Response Team.
Nicholas Torres Wilmer Valderrama Special Agent for the NCIS Major Case Response Team.
Jacqueline Sloane Maria Bello NCIS Forensic Psychologist.
James Palmer Brian Dietzen Chief Medical Examiner for the Major Case Response Team.
Kasie Hines Diona Reasonover NCIS Forensic Specialist.
Leon Vance Rocky Carroll Director of NCIS
Donald Mallard David McCallum NCIS Historian. Despite being credited, McCallum doesn't appear in this episode.

Other Cast[]

Name Portrayed by Role
Nabi Ismail Bashey
Farokh Wais Wardak
Ben Mitchell Michael Goldsmith
Eric Freeman Javon Johnson NCIS Special Agent, Middle East Field Office, Bahrain.
Samantha Watkins Sarah G. White AKA "Mom".
Tahir Nima Jafari
Yazmin's Mom Hedyeh Falsafi
Yazmin Ariana Elavia
Marine (True Believer) Manny Cartier
Darya Sara Emami
Abu Muhamad Marco Khan AKA "Kidnapper".
Albert Gorsch Daniel Lupa-Chazan
Kidnapper Roman Mitichyan Uncredited role.
  v - e - dNCIS Season 18
Sturgeon Season (episode)Everything Starts Somewhere (episode)Blood and Treasure (episode)Sunburn (episode)Head of the Snake (NCIS episode)1mm (episode)The First Day (episode)True Believer (episode)Winter Chill (episode)Watchdog (episode)Gut Punch (episode)Sangre (episode)Misconduct (episode)Unseen Improvements (episode)Blown Away (episode)Rule 91 (episode)