In the directory "Sierra" of the station computer, there are plugs for fifteen other Sierra games: the first Police Quest: In Pursuit of the Death Angel (1987), King's Quest 1-4, Silpheed (1986), Manhunter: New York (1988), Thexder, Gold Rush! (1988), Mixed-Up Mother Goose (1987), Space Quest 1-3 and Leisure Suit Larry 1-2.
In the station computer there are five sub-directories which require passwords to gain access. The passwords for three of them (Homicide, Vice and Personnel) can be found in the office, but these passwords are invalid for the remaining two subdirectories (Burglary and FireArms). It is unknown how to gain access to these two sub-directories.
While the first game Police Quest: In Pursuit of the Death Angel (1987) focused on basic patrol officer procedure, this game focuses more on investigation procedures, including gathering of evidence.
When investigating at the airport, you get to meet a main character of another Sierra series: Larry from the Leisure Suit Larry series.