Sierra to The Flash
9 connections
Sierra
Emergency!
The fictional Sierra National Park of Sierra is in the same universe as Emergency!
Matlock
Both feature the fictional Trans Global Airlines
Diagnosis: Murder
Diagnosis Murder's Dr Mark Sloan was defended by Matlock when Sloan was accused of murder
JAG
Oceanic Airlines
NCIS
NCIS was a spinoff of JAG
NCIS: LA
NCIS: LA was a spinoff of NCIS
Hawaii Five-O (2010)
NCIS: LA and Hawaii Five-O worked together in a crossover episode to stop a smallpox outbreak
Arrow
Hawaii Five-O references Dominic Alonzo from Arrow
The Flash
Arrow spun off The Flash