This game is a Classic Sierra Game which means that you can both move character with arrow keys and type in commands.
Released in 1987 using Sierra's Adventure Game Interpreter parser engine, Police Quest casts the player as Sonny Bonds, a 15-year veteran police officer in the fictional town of Lytton, California (name was originally randomly picked from Lytton, British Columbia, CA, not to be confused with Lytton, California). The game is the most realistic of those developed by Sierra in the late 1980s when compared to Leisure Suit Larry, King's Quest, or Space Quest, and featured many puzzles where proper police procedure is required to succeed.[
Like the slogan goes... In pursuit of the Death Angel.
Check this page for "Police Quest 1" Updates in the future.