Originally Written as a Dirty Harry Film
Apparently, Code of Silence was originally written in the late '70s as the fourth Dirty Harry film.
http://cocatalog.loc.gov/cgi-bin/Pwebrecon.cgi?v1=3&ti=1,3&Search_Arg=dirty%20harry%20IV&Search_Code=TALL&CNT=25&PID=gm0n--kFOBo4U90vUVyxOWHE&SEQ=20140607105603&SID=1
I'm not sure how many rewrites it went through after that, but I can still kind of imagine Eastwood in the lead role of this film.
I'm George McFly, I'm your density.