The Monster (episode)

The Monster is the 17th episode of NCIS: Los Angeles Season 9 and also the 209th episode of the entire NCIS: Los Angeles series.
==Synopsis==
When a Navy Lieutenant Commander disappears and is soon found dead, OSP investigate and soon discover that the murder is connected to the twisted work that a group of serial killers who put on shows for high-paying voyeurs have been carrying out while Mosley and Callen work with the ATF to apprehend an international arms dealer.
==Plot==
==Major Events==
*Spencer Williams is introduced for the first time.
*Molsey reveals to Callen she had a romantic relationship with Spencer Williams and they had a son together, but when Spencer became a fugitive and fled the country, he took their son and she hasn't seen him in five years.
*Callen promises to help Mosley get her son back.
==Trivia==
*The group of serial killers reappeared five years later, in October 2022, in the NCIS: Los Angeles Season 14 episode, The Body Stitchers (episode) but following NCIS: Los Angeles's cancellation, the serial killer storyline like many ongoing storylines was ultimately dropped altogether.
==Cast==
===Series Regulars===
Name 	Portrayed by 	Role
G. Callen 	Chris O'Donnell 	NCIS Special Agent and the leader of the Office of Special Projects field team.
Kensi Blye 	Daniela Ruah 	NCIS Special Agent with the Office of Special Projects.
Marty Deeks 	Eric Christian Olsen	A Detective with the Los Angeles Police Department and also the LAPD/NCIS liaison.
Eric Beale 	Barrett Foa 	Tech Operator with the Office of Special Projects.
Nell Jones 	Renée Felice Smith 	Tech Analyst for the Office of Special Projects.
Shay Mosley 	Nia Long 	NCIS Executive Assistant Director for Pacific Operations (EAD).
Henrietta Lange	Linda Hunt 	Operations Manager with the Office of Special Projects.
Sam Hanna 	LL Cool J 	A former Navy SEAL-turned-NCIS Special Agent with the Office of Special Projects.
===Recurring Cast===
Name 	Portrayed by 	Role
Harley Hidoko	Andrea Bordeaux	NCIS Special Agent.
Lisa Rand 	Alicia Coppola 	FBI Special Agent.
===Guest Cast===
Name 	Portrayed by 	Role
Albert Barrington	Rob Nagle 	
Mandy Huang 	Laura Kai Chen 	
Cha'risa Swan 	Natalia Castellanos	ATF Special Agent.
Elliott Ross 	Christopher Rivas 	ATF Special Agent.
Spencer Williams 	Lamont Thompson 	Shay Mosley's ex-husband and also an arms dealer.
Robert Griffin 	Tobias Jelinek 	
Thomas Jones 	Dutch Johnson 	
Buyer 1 	Josell Mariano 	
Cole Bingham 	Michael Broderick 	
Cindy Ferguson 	Kerrie Blaisdell 	
Justin Tucker 	Matt Kelly 	
Timothy Weir 	Andy Marques 	Navy Lieutenant Commander.
  v - [ e] - dNCIS: Los Angeles Season 9
♦ Party Crashers (episode) ♦ Se Murio El Payaso (episode) ♦ Assets (episode) ♦ Plain Sight (episode) ♦ Mountebank (episode) ♦ Can I Get a Witness? (episode) ♦ The Silo (episode) ♦ This Is What We Do (episode) ♦ Fool Me Twice (episode) ♦ Forasteira (episode) ♦ All Is Bright (episode) ♦ Under Pressure (episode) ♦ Cac Tu Nhan (episode) ♦ Goodbye, Vietnam (episode) ♦ Liabilities (episode) ♦ Warriors Of Peace (episode) ♦ The Monster (episode) ♦ Vendetta (episode) ♦ Outside The Lines (episode) ♦ Reentry (episode) ♦ Where Everybody Knows Your Name (episode) ♦ Venganza (episode) ♦ A Line in the Sand (episode) ♦ Ninguna Salida (episode)
Category:NCIS: Los Angeles Episodes
Category:NCIS: Los Angeles Season 9 Episodes
Category:NCIS: Los Angeles Episodes written by Adam George Key
Category:NCIS: Los Angeles Episodes written by Frank Military
Category:NCIS: Los Angeles Episodes directed by Dennis Smith
Category:NCIS: Los Angeles Episodes featuring Harley Hidoko
Category:NCIS: Los Angeles Episodes featuring Lisa Rand