The team takes on a moral dilemma when tragedy strikes at a hospital on NCIS: SydneySeason 3 Episode 16, “Ticker.”
It’s hard to glean many details from the photos, but it seems like Callan Mulvey’s Gary Simms is the one who takes a ward hostage.
The photos for “Ticker” also suggest that Gary has some sort of dynamic with Adelaide Kennedy’s Violet. It’s likely that Gary wants Violet to receive a heart transplant that is meant for someone else.
Olivia Swann as NCIS Special Agent Captain Michelle Mackey and Todd Lasance as AFP Liaison Officer Sergeant Jim ‘JD’ Dempsey in NCIS: Sydney episode 16, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+
It seems like DeShawn will get into the hospital at some point, presumably, to try to diffuse the situation however he can.
It looks like he has Mackey and JD helping him gather intel outside.
While it will be a stressful event for everyone involved, it is interesting that “Ticker” is putting DeShawn undercover. It’s much more rare for him to go undercover on the show than it is, say, Mackey and JD.
That may be where the debate starts for the team of who is most deserving of a heart. NCIS: Sydney always puts the characters into high-stress, intense situations, but this one is on another level.
Here’s everything you need to know about this episode, including the air date, cast, promo, and how to watch.
NCIS: Sydney Season 3 Episode 16 Details
Title: “Ticker”
Air Date: Tuesday, April 21, 2026
Time: 10/9c
Network: CBS
Writer: Christine Bartlett
Director: Jennifer Leacey
Sean Sagar as NCIS Special Agent DeShawn Jackson and Tuuli Narkle as AFP Liaison Officer Constable Evie Cooper in NCIS: Sydney episode 16, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+
How to Watch NCIS: Sydney Season 3 Episode 16
Live: CBS at 10/9c
Streaming: Available next day on Paramount+
NCIS: Sydney Season 3 Episode 16 Description
Lives hang in the balance when a hospital ward is taken hostage, and the team must wrestle with an impossible dilemma: who is more deserving of a heart?
Guest Stars & Returning Characters
Main 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: Callan Mulvey as Gary Simms, Adelaide Kennedy as Violet
Check out the photos from NCIS: Sydney Season 3 Episode 16:
Jo Briant as Dr. Kate Harvey and Sean Sagar as NCIS Special Agent DeShawn Jackson in NCIS: Sydney episode 16, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+L-R: Jo Briant as Dr. Kate Harvey, Callan Mulvey as Gary Simms and Sean Sagar as NCIS Special Agent DeShawn Jackson in NCIS: Sydney episode 16, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+Callan Mulvey as Gary Simms and Adelaide Kennedy as Violet in NCIS: Sydney episode 16, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+Callan Mulvey as Gary Simms in NCIS: Sydney episode 16, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+Callan Mulvey as Gary Simms in NCIS: Sydney episode 16, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+Olivia Swann as NCIS Special Agent Captain Michelle Mackey in NCIS: Sydney episode 16, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+Olivia Swann as NCIS Special Agent Captain Michelle Mackey in NCIS: Sydney episode 16, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+Sean Sagar as NCIS Special Agent DeShawn Jackson and Tuuli Narkle as AFP Liaison Officer Constable Evie Cooper in NCIS: Sydney episode 16, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+Sean Sagar as NCIS Special Agent DeShawn Jackson and Adelaide Kennedy as Violet in NCIS: Sydney episode 16, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+Adelaide Kennedy as Violet and Sean Sagar as NCIS Special Agent DeShawn Jackson in NCIS: Sydney episode 16, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+Olivia Swann as NCIS Special Agent Captain Michelle Mackey and Todd Lasance as AFP Liaison Officer Sergeant Jim ‘JD’ Dempsey in NCIS: Sydney episode 16, season 3 streaming on Paramount+, 2026. Photo Credit: Daniel Asher Smith/Paramount+
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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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