Version differencesHopkins FBI was (and still is) pretty controversial for its extremely gratuitous violence and colourful comic book depictions of grisly murders. The UK version has all the gory sequence disabled by default. They can be enabled by applying the patch available from the official site.
Linux versionHopkins FBI is known to be one of the (if not the) first commercial game for Linux.
OS/2 Warp versionThis game was one of the very few to initially be published for OS/2 Warp.
Information also contributed by chirinea, Karthik KANE and Pseudo_Intellectual