Police Quest is a series of computer games produced and published by Sierra On-Line between 1987 and 1993. The original series was composed of four adventure games, the first three of which were designed by former policeman Jim Walls, with the fourth title designed by former LAPD Chief Daryl F. Gates.
A spin-off from the Police Quest series, Daryl F. Gates' Police Quest: SWAT, was released in 1995 but was a tactical simulator rather than a graphic adventure. Both SWAT and the real-time strategy game SWAT 2 still carried the Police Quest name, although subsequent titles in the series would drop the Police Quest title.
Sonny and Marie married following Bains' death. Promoted once more, Sonny now has to deal with rampant crime as a drug cartel begins operating in Lytton and evidence of a satanic cult starts to appear. When Marie is stabbed in a mall parking lot, Sonny's police work becomes personal.
Sonny must deal with a partner with questionable ethics as well as find patterns in crime to find his next lead. The Bains family also plays a role in this game.
Released in 1991 for SCI version 1, PQ3 is completely mouse-driven. It was only released for the IBM PC and the Amiga. After this game, Jim Walls left Sierra for reasons that have still not been publicly explained, and SWAT founder Daryl F. Gates was named to take over of the Police Quest series.