CBS has announced that "NCIS: Sydney" will be the fourth spin-off series in the NCIS franchise. It will be the first international series in the franchise and will follow a team of US NCIS agents and Australian law enforcement officers as they investigate crimes in the Sydney harbor. The series is set to premiere in 2023, earlier than expected, despite most scripted shows being delayed until 2024 due to ongoing strikes.

The show will be available to watch on CBS and Paramount+. The cast includes mostly Australian actors and the storyline will focus on a multinational task force tackling naval crimes. The trailer highlights the tension between the two different agencies and hints at the growing pains that the task force will face.