NCIS: Sydney will premiere on Paramount Plus UK on November 10, with eight episodes released weekly. The spin-off series features a mix of American, Australian, and British cast members. The first episode, titled "Gone Fission," sees the Australian Federal Police (AFP) team up with NCIS to solve a case involving a dead petty officer. The show includes Todd Lasance as Sergeant Jim 'JD' Dempsey, Olivia Swann as NCIS Special Agent Michelle Mackey, William McInnes as Dr. Roy Penrose, Tuuli Narkle as Constable Evie Cooper, Mavournee Hazel as Forensic Scientist Bluebird 'Blue' Gleeson, and Sean Sagar as Special Agent DeShawn Jackson.