This is the first time Rollins' tattoo is shown on the show until the second time in season 19's "No Good Reason. She has been on the show 7 years.
David Eigenberg plays Christopher Herrmann on Chicago Fire, another Dick Wolf production.
The picture frames in Dr. Hal Brightmans office are off centered.
Patrick Fischler plays also a doctor allegedly involved in drugs dealing to minors in "2 guns" (2013)