Eureka to Sleepy Hollow
5 connections
Eureka
Warehouse 13
Fargo from Eureka visits Warehouse 13 in a crossover episode
The X-Files
On Warehouse 13 Mrs. Frederic and Steve Jinks enter The Library, a secret room in the Vatican. There is a pack of Morley cigarettes on the table
CSI: Crime Scene Investigators
Morley cigarettes are smoked by Warrick Brown in a episode of Crime Scene Investigation.
Bones
An episode of Bones has a reference to a prostitute who worked at the (fictional and from the CSI universe) Tangiers hotel
Sleepy Hollow
Temperance and Booth from Bones team up with Icabod and Abbie from Sleepy Hollow on a case