On February 16, 2022, the fourth spin-off series of NCIS set in the Australian city of Sydney was announced, to be shown on the Australian Network Ten, and streamed on Paramount+. Shane Brennan has been announced as the showrunner.
Five months later. Sydney quits the CIA and joins a Black Ops unit called "Authorized Personnel Only" alongside Dixon, Jack, Vaughn and... Sloane whom for limited immunity is co-operating with the APO. Meanwhile, the truth Sydney found out in Wittenberg endangers her relationship with Jack, and eventually she reveals the awful truth to Vaughn: about her father having Irina murdered over a year earlier.