Deadline to NCIS: New Orleans

Characters from various Law & Order series have read, referenced or visited the offices of the New York Ledger, the fictional paper from Dick Wolf's series, Deadline.

Hudson University is the fictional University where many Law & Order characters graduated as well as the location of F.I.R.E.S.T.O.R.M. On Arrow

Hawaii Five-O references Dominic Alonzo from Arrow

NCIS: LA and Hawaii Five-O worked together in a crossover episode to stop a smallpox outbreak

NCIS: LA and New Orleans spun off of NCIS