You Can See Real Serial Killers In The Opening Credits
The opening credits of the show were made to be an unsettling montage. If you take a good look at the background, you are going to find mugshots of actual murderers! To be specific, you might be able to find Lee Harvey Oswald, Charles Manson, and John Wayne Gacy if you are observant enough.

You Can See Real Serial Killers In The Opening Credits
There Is A Reference To The Departure Of Mandy Patinkin
When Mandy Patinkin made up his mind to leave the show, Joe Mantegna stepped in to replace him. The first time that his character is introduced, we see him firing at a duck. This is actually a nod to the fact that Patinkin’s character loves birds. In 2014, an executive producer by the name of Breen Frazier only told Buzzfeed, “You do the math.”

There Is A Reference To The Departure Of Mandy Patinkin