Chicago PD to Person of Interest
5 connections
Chicago PD
Law & Order: Special Victims Unit
Chicago PD crossover to Law & Order: SVU
Homicide: Life On The Street
John Munch was a detective Homicide and then SVU
The X-Files
Homicide's John Munch questioned The X-Files' The Lone Gunmen.
Fringe
Fringe makes reference to The X-Files classification of files.
Person of Interest
In the pilot of Person of Interest John Reese's suspect Diane Hanson has emails numerous characters from Fringe