Treat Williams (Benny Severide) and Tom Amandes (Detective Wheeler) worked together from 2002-2006 in four seasons of Everwood (2002).
Taylor Kinney's character, asks his coworkers if "they had a silver bullet on someone, would they use it?" Taylor Kinney previously starred on The Vampire Diaries (2009), as Mason Lockwood, who was a werewolf. Silver bullets have been said to kill werewolves in mythology.