NCIS: New Orleans

Zoe McLellan was previously a main cast member in the final season of 'JAG', the parent series of the 'NCIS' franchise. She played Petty Office Jennifer Coates.

Pauley Perrette and Michael Weatherly of 'NCIS' have been in all the shows of the 'NCIS' franchise, including 'JAG', 'NCIS', 'NCIS: Los Angeles' and 'NCIS: New Orleans'.

The only 'NCIS' series where the main characters drive cars with sirens and lights.