Reef Madness (episode)

Reef Madness is the tenth and final episode of NCIS Season 21 and the 467th episode of the entire NCIS series.
==Synopsis==
Parker and Knight discover three bodies on an old Navy ship that's about to be sunk and turned into an artificial reef when they're suddenly locked inside by a mysterious figure while Vance offers Knight a unique opportunity.
==Cast==
===Series Regulars===
Name 	Portrayed by 	Role
Timothy McGee 	Sean Murray 	Senior Agent for the NCIS Major Case Response Team.
Nicholas Torres	Wilmer Valderrama	Special Agent for the NCIS Major Case Response Team.
James Palmer 	Brian Dietzen 	Chief Medical Examiner for the NCIS Major Case Response Team.
Kasie Hines 	Diona Reasonover 	NCIS Forensic Specialist.
Jessica Knight 	Katrina Law 	NCIS Special Agent.
Leon Vance 	Rocky Carroll 	NCIS Director.
Alden Parker 	Gary Cole 	Special Agent in Charge of the NCIS Major Case Response Team.
===Recurring Cast===
Name 	Portrayed by 	Role
Guy Ross 	Kent Shocknek	
Sammy Craig	Adam Ferrara 	
===Guest Cast===
Name 	Portrayed by 	Role
Michael Chang 	Matthew Yang King	
Lacy 	Bruce Nozick 	
Edgar (Reef Madness) 	Michael Monks 	
Molly Mackin 	Gabriella Piazza 	
Janice 	Tammi Mac 	
Mother (Reef Madness)	Mackenzie Firgens	
Lily 	Kensie Mills 	
Category:NCIS Episodes
Category:NCIS Season 21 Episodes
Category:NCIS Season Finale Episodes
Category:NCIS Episodes written by Scott Williams
Category:NCIS Episodes directed by Jose Clemente Hernandez
  v - [ e] - dNCIS Season 21
♦ Algún Día (episode) ♦ The Stories We Leave Behind (episode) ♦ Lifeline (NCIS episode) ♦ Left Unsaid (episode) ♦ The Plan (episode) ♦ Strange Invaders (episode) ♦ A Thousand Yards (episode) ♦ Heartless (episode) ♦ Prime Cut (episode) ♦ Reef Madness (episode)