The Wire to Tru Calling
3 connections
The Wire
Homicide: Life On The Street
On The Wire (episode "That's Got His Own") Junior Bunk from Homicide was mentioned as someone who had once put bad drug product on the market causing deaths.
Law & Order
Law and Order and Homicide crossed over on four episodes
Tru Calling
Tru from tru Calling attends Hudson University, the same ficitional University that many L&O characters attended