This movie was a blisteringly good follow up to the original Harry Callaghan offering, slightly derrogated at the time for having a far fetched story line, but really, it doesn't look that far fetched to me now: There's been plenty of true stories in the press of in house police management of cases that virtually amount to illegal vigilantism by uniformed police officers in both the the USA and the UK in the thirty five years since this movie was made, and it's absolutely the norm in many countries still, so really this was a fantastic fictionalised warning of the dangers of police power corrupting their own law enforcing officers. It finishes as well as it starts off, and has some superb cat and mouse scenes, with fearless cop 'Dirty Harry' pursuing these rotten apples with as much purpose as he does all the other scumbag criminals in the city who put people's lives in danger. And his realisation that this canker goes far deeper than he imagined, and his subsequent determination to get the big maggot in the middle is pure Dirty Harry, and makes the movie even more enjoyable. Terrific movie entertainment.