The team refers to the "Butcher of Kingsbury Run" as a Cleveland serial killer who found his victims in gay bars and shot them in a local park. This is possibly a veiled reference to Jeffrey Dahmer. However, although Dahmer found his victims in gay bars, he never shot them in a park. The real Mad Butcher of Kingsbury Run, also known as The Cleveland Torso Killer, was active from 1935 to 1938, though estimates vary putting him as possibly active from the 1920s through 1950. He found his victims in the shanty-towns of Cleveland during the Great Depression and killed them by decapitating and often dismembering them. To date only 2 of his victims have been positively identified, a third tentatively identified and one has ever been charged for the crimes. The official body count for the Torso Killer stands at 12, though it's possible he killed upwards of 40 people.
After the ME swabs Zoe's forehead in his lab and the camera cuts back to Zoe's body her throat can be seen moving.
In the beginning, when Zoe sneaks into the backyard of the crime scene and is followed by the supposed unsub (Eric), he states that he lives in the area. Zoe asks him what his address is and he responds "817 Tivoli Street". There is no Tivoli Street in Cleveland.