Watch NCIS: Sydney Season 3 Episode 18 Online
“Rough Diamond” — Watch "NCIS: Sydney" Season 3 Episode 18 online in HD for free. Check streaming providers, cast, and episode details.
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Season 3 Episode 18 — Aired on May 5, 2026.
Notable cast/guest names in this episode include Olivia Swann, Todd Lasance, Sean Sagar, Tuuli Narkle.
This page includes 1 official still(s) (when available) plus legal availability links.
Looking for “watch NCIS: Sydney Season 3 Episode 18 online”? This is a legal-only guide with synopsis, stills, and navigation for this season.
Synopsis
The death of a former Marine wanted for murder leads the team to a sinister plot involving a disgraced journalist, one of Australia’s richest men and lab-grown diamonds.
Stills
Cast
as Michelle Mackey
as Jim 'JD' Dempsey
as DeShawn Jackson
as Evie Cooper
as Bluebird 'Blue' Gleeson
as Dr. Roy Penrose
Episodes – Season 3
Trailer / clip
There�s no trailer available for this series right now.
