As the episode open, people are reviewing the newest special order. Department special order 51 changes the Detective Bureau and leaves the rest of the department unaffected.
Two Detective Bureau divisions, Robbery & Homicide, combine into one division, Robbery Homicide. The divisions Robbery and Homicide overlap in many of their functions. The change, to one division, improves efficiency by combining resources and the two commands.
The Frauds Division has a new name, Bunco Forgery. The duties and responsibilities remain the same.
The missing persons section moved from the Homicide Division to police central headquarters (D.H.Q).
These changes affect Joe and Bill in this and future episodes, especially when Joe tells us where they are working this episode.