NCIS: Sydney Season 3 Episode 15, "The Collective" -- Todd Lasance as AFP Liaison Officer Sergeant Jim 'JD' Dempsey and Olivia Swann as NCIS Special Agent Captain Michelle Mackey NCIS: Sydney Season 3 Episode 15 Preview: The Collective

NCIS: Sydney Season 3 Episode 15 Preview: The Collective

NCIS: Sydney, Previews

NCIS: Sydney Season 3 Episode 15, “The Collective,” brings Mackey’s past to the present when a Marina is found dead.

The Marine is linked to Mackey’s ill-fated rescue mission in Afghanistan. The photos for the episode suggest that the procedural drama will have to backtrack in Mackey’s past to get answers about his death.

To do so, it seems like “The Collective” will utilize some flashbacks to when DeShawn was starting in the Navy, and Mackey was with the USMC. 

NCIS: Sydney Season 3 Episode 15, "The Collective" -- Sean Sagar as NCIS Special Agent DeShawn Jackson and Olivia Swann as NCIS Special Agent Captain Michelle Mackey
Sean Sagar as NCIS Special Agent DeShawn Jackson and Olivia Swann as NCIS Special Agent Captain Michelle Mackey in NCIS: Sydney episode 15, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+ © TM & © 2026 CBS Studios Inc. NCIS: Sydney and related marks and logos are trademarks of CBS Studios Inc. All Rights Reserved.

It also seems like the old enemy that Mackey crosses paths with could be Angus Sampson’s Lee Myer. That character appears in both the flashbacks and the present, per the episode’s photos. He’s also pointing a gun at JD in one of the photos, which may be a good sign that Lee’s not one to trust.

At some point, the person that Mackey cares about the most will come under threat. The episode could prove this theory wrong, but it feels most likely that said person will be her son, which is terrifying to imagine. Could this be linked to Ghost’s list from NCIS: Sydney Season 3 Episode 9, “South of Nowhere?” 

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Either way, NCIS: Sydney hasn’t made it easy to understand the photos’ timeline.

It looks like JD and Mackey will go undercover as a married couple at some point during “The Collective.” As someone who has watched a number of crime procedurals, including NCIS: Los Angeles, this could spell good things for JD and Mackey’s romantic future. My fingers are crossed! 

Here’s everything you need to know about this episode, including the air date, cast, promo, and how to watch.


NCIS: Sydney Season 4 Episode 15 Details

  • Title: “The Collective”
  • Air Date: Tuesday, April 14, 2026
  • Time: 10/9c
  • Network: CBS
  • Writer: James Cripps
  • Director: Jennifer Leacey
NCIS: Sydney Season 3 Episode 15, "The Collective" -- Tuuli Narkle as AFP Liaison Officer Constable Evie Cooper, Sean Sagar as NCIS Special Agent DeShawn Jackson, Todd Lasance as AFP Liaison Officer Sergeant Jim 'JD' Dempsey, Olivia Swann as NCIS Special Agent Captain Michelle Mackey, and William McInnes as Forensic Pathologist Dr. Roy Penrose
L-R: Tuuli Narkle as AFP Liaison Officer Constable Evie Cooper, Sean Sagar as NCIS Special Agent DeShawn Jackson, Todd Lasance as AFP Liaison Officer Sergeant Jim ‘JD’ Dempsey, Olivia Swann as NCIS Special Agent Captain Michelle Mackey, and William McInnes as Forensic Pathologist Dr. Roy Penrose in NCIS: Sydney episode 15, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+ © TM & © 2026 CBS Studios Inc. NCIS: Sydney and related marks and logos are trademarks of CBS Studios Inc. All Rights Reserved.

How to Watch NCIS: Sydney Season 4 Episode 15

  • Live: CBS at 10/9c
  • Streaming: Available next day on Paramount+
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NCIS: Sydney Season 4 Episode 15 Description

When a Marine linked to Mackey’s ill-fated rescue mission in Afghanistan is found dead, old enemies emerge and the person she cares for most comes under threat.


Guest Stars & Returning Characters

  • Cast: Olivia Swann as NCIS Special Agent Michelle Mackey, Todd Lasance as AFP Sergeant Jim “JD” Dempsey, Sean Sagar as NCIS Special Agent DeShawn Jackson, Tuuli Narkle as AFP Constable Evie Cooper, Mavournee Hazel as AFP Forensic Scientist Bluebird “Blue” Gleeson, and William McInnes as AFP Forensic Pathologist Dr. Roy Penrose, Claude Jabbour as Travis “Trigger” Riggs
  • Guest Stars: Sara Zwangobani as CDR Croix Kendall, Dave Hoey as Lance Corporal Boyd Caballero, Angus Sampson as Lee Myers

Promo & Photos

Check out the photos from NCIS: Sydney Season 3 Episode 15:

NCIS: Sydney Season 3 Episode 15, "The Collective" -- Olivia Swann as NCIS Special Agent Captain Michelle Mackey
Olivia Swann as NCIS Special Agent Captain Michelle Mackey in NCIS: Sydney episode 15, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+ © TM & © 2026 CBS Studios Inc. NCIS: Sydney and related marks and logos are trademarks of CBS Studios Inc. All Rights Reserved.
NCIS: Sydney Season 3 Episode 15, "The Collective" -- Dave Hoey as Lance Corporal Boyd Caballero
Dave Hoey as Lance Corporal Boyd Caballero in NCIS: Sydney episode 15, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+ © TM & © 2026 CBS Studios Inc. NCIS: Sydney and related marks and logos are trademarks of CBS Studios Inc. All Rights Reserved.
NCIS: Sydney Season 3 Episode 15, "The Collective" -- Tuuli Narkle as AFP Liaison Officer Constable Evie Cooper and Sean Sagar as NCIS Special Agent DeShawn Jackson
Tuuli Narkle as AFP Liaison Officer Constable Evie Cooper and Sean Sagar as NCIS Special Agent DeShawn Jackson in NCIS: Sydney episode 15, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+ © TM & © 2026 CBS Studios Inc. NCIS: Sydney and related marks and logos are trademarks of CBS Studios Inc. All Rights Reserved.
NCIS: Sydney Season 3 Episode 15, "The Collective" -- Todd Lasance as AFP Liaison Officer Sergeant Jim 'JD' Dempsey and Olivia Swann as NCIS Special Agent Captain Michelle Mackey
Todd Lasance as AFP Liaison Officer Sergeant Jim ‘JD’ Dempsey and Olivia Swann as NCIS Special Agent Captain Michelle Mackey in NCIS: Sydney episode 15, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+ © TM & © 2026 CBS Studios Inc. NCIS: Sydney and related marks and logos are trademarks of CBS Studios Inc. All Rights Reserved.
NCIS: Sydney Season 3 Episode 15, "The Collective" -- Mavournee Hazel as Forensic Pathologist Bluebird 'Blue' Gleeson
Mavournee Hazel as Forensic Pathologist Bluebird ‘Blue’ Gleeson in NCIS: Sydney episode 15, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+ © TM & © 2026 CBS Studios Inc. NCIS: Sydney and related marks and logos are trademarks of CBS Studios Inc. All Rights Reserved.
NCIS: Sydney Season 3 Episode 15, "The Collective" -- Angus Sampson as Lee Myers, Todd Lasance as AFP Liaison Officer Sergeant Jim 'JD' Dempsey, and Olivia Swann as NCIS Special Agent Captain Michelle Mackey
L-R: Angus Sampson as Lee Myers, Todd Lasance as AFP Liaison Officer Sergeant Jim ‘JD’ Dempsey, and Olivia Swann as NCIS Special Agent Captain Michelle Mackey in NCIS: Sydney episode 15, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+ © TM & © 2026 CBS Studios Inc. NCIS: Sydney and related marks and logos are trademarks of CBS Studios Inc. All Rights Reserved.
NCIS: Sydney Season 3 Episode 15, "The Collective" -- Olivia Swann as NCIS Special Agent Captain Michelle Mackey and Todd Lasance as AFP Liaison Officer Sergeant Jim 'JD' Dempsey
Olivia Swann as NCIS Special Agent Captain Michelle Mackey and Todd Lasance as AFP Liaison Officer Sergeant Jim ‘JD’ Dempsey in NCIS: Sydney episode 15, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+ © TM & © 2026 CBS Studios Inc. NCIS: Sydney and related marks and logos are trademarks of CBS Studios Inc. All Rights Reserved.
NCIS: Sydney Season 3 Episode 15, "The Collective" -- Olivia Swann as NCIS Special Agent Captain Michelle Mackey and Sean Sagar as NCIS Special Agent DeShawn Jackson
Olivia Swann as NCIS Special Agent Captain Michelle Mackey and Sean Sagar as NCIS Special Agent DeShawn Jackson in NCIS: Sydney episode 15, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+ © TM & © 2026 CBS Studios Inc. NCIS: Sydney and related marks and logos are trademarks of CBS Studios Inc. All Rights Reserved.
NCIS: Sydney Season 3 Episode 15, "The Collective" -- Tuuli Narkle as AFP Liaison Officer Constable Evie Cooper, Sean Sagar as NCIS Special Agent DeShawn Jackson, Todd Lasance as AFP Liaison Officer Sergeant Jim 'JD' Dempsey, Olivia Swann as NCIS Special Agent Captain Michelle Mackey, and William McInnes as Forensic Pathologist Dr. Roy Penrose
L-R: Tuuli Narkle as AFP Liaison Officer Constable Evie Cooper, Sean Sagar as NCIS Special Agent DeShawn Jackson, Todd Lasance as AFP Liaison Officer Sergeant Jim ‘JD’ Dempsey, Olivia Swann as NCIS Special Agent Captain Michelle Mackey, and William McInnes as Forensic Pathologist Dr. Roy Penrose in NCIS: Sydney episode 15, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+ © TM & © 2026 CBS Studios Inc. NCIS: Sydney and related marks and logos are trademarks of CBS Studios Inc. All Rights Reserved.
NCIS: Sydney Season 3 Episode 15, "The Collective"
NCIS: Sydney season 3, on the CBS Television Network, and streaming on Paramount+, 2025. Photo Credit: Daniel Asher Smith/Paramount+
NCIS: Sydney Season 3 Episode 15, "The Collective" -- Angus Sampson as Lee Myers
Angus Sampson as Lee Myers in NCIS: Sydney episode 15, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+ © TM & © 2026 CBS Studios Inc. NCIS: Sydney and related marks and logos are trademarks of CBS Studios Inc. All Rights Reserved.
NCIS: Sydney Season 3 Episode 15, "The Collective" -- Todd Lasance as AFP Liaison Officer Sergeant Jim 'JD' Dempsey
Todd Lasance as AFP Liaison Officer Sergeant Jim ‘JD’ Dempsey in NCIS: Sydney episode 15, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+ © TM & © 2026 CBS Studios Inc. NCIS: Sydney and related marks and logos are trademarks of CBS Studios Inc. All Rights Reserved.
NCIS: Sydney Season 3 Episode 15, "The Collective" -- Sean Sagar as NCIS Special Agent DeShawn Jackson
Sean Sagar as NCIS Special Agent DeShawn Jackson in NCIS: Sydney episode 15, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+ © TM & © 2026 CBS Studios Inc. NCIS: Sydney and related marks and logos are trademarks of CBS Studios Inc. All Rights Reserved.
NCIS: Sydney Season 3 Episode 15, "The Collective" -- Olivia Swann as NCIS Special Agent Captain Michelle Mackey
Olivia Swann as NCIS Special Agent Captain Michelle Mackey in NCIS: Sydney episode 15, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+ © TM & © 2026 CBS Studios Inc. NCIS: Sydney and related marks and logos are trademarks of CBS Studios Inc. All Rights Reserved.
NCIS: Sydney Season 3 Episode 15, "The Collective" -- Olivia Swann as NCIS Special Agent Captain Michelle Mackey and Sean Sagar as NCIS Special Agent DeShawn Jackson
Olivia Swann as NCIS Special Agent Captain Michelle Mackey and Sean Sagar as NCIS Special Agent DeShawn Jackson in NCIS: Sydney episode 15, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+ © TM & © 2026 CBS Studios Inc. NCIS: Sydney and related marks and logos are trademarks of CBS Studios Inc. All Rights Reserved.
NCIS: Sydney Season 3 Episode 15, "The Collective" -- Sean Sagar as NCIS Special Agent DeShawn Jackson and Olivia Swann as NCIS Special Agent Captain Michelle Mackey
Sean Sagar as NCIS Special Agent DeShawn Jackson and Olivia Swann as NCIS Special Agent Captain Michelle Mackey in NCIS: Sydney episode 15, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+ © TM & © 2026 CBS Studios Inc. NCIS: Sydney and related marks and logos are trademarks of CBS Studios Inc. All Rights Reserved.
NCIS: Sydney Season 3 Episode 15, "The Collective" -- Angus Sampson as Lee Myers and Olivia Swann as NCIS Special Agent Captain Michelle Mackey
Angus Sampson as Lee Myers and Olivia Swann as NCIS Special Agent Captain Michelle Mackey in NCIS: Sydney episode 15, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+ © TM & © 2026 CBS Studios Inc. NCIS: Sydney and related marks and logos are trademarks of CBS Studios Inc. All Rights Reserved.
NCIS: Sydney Season 3 Episode 15, "The Collective" -- Sean Sagar as NCIS Special Agent DeShawn Jackson and Sara Zwangobani as CDR Croix Kendall
Sean Sagar as NCIS Special Agent DeShawn Jackson and Sara Zwangobani as CDR Croix Kendall in NCIS: Sydney episode 15, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+ © TM & © 2026 CBS Studios Inc. NCIS: Sydney and related marks and logos are trademarks of CBS Studios Inc. All Rights Reserved.

What are your hopes for this episode of NCIS: Sydney? Share your thoughts with us in the comments below!

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NCIS: Sydney airs Tuesdays at 10/9c on CBS.

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Shelby is a TV enthusiast and pop culture writer. She's an avid podcast listener, green tea drinker, and soccer fan. Her brand can be summarized in rom-coms, superheroes, teen dramas, and workplace comedies.

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