The sister in law is one of those little known movies from the 1970's that slipped below the radar.the big star in this film is John Savage,who went on to star in; hair(78)the onion field(80)and the recent low budget horror flick;Christina's house(1999)this is about two brothers,one good one rotten,savage plays the good one.there's a love triangle,mafia dealings,and some drama.I'm not giving any spoilers away on this but i do recommend this movie as it is pretty good.the title makes it sound like an exploitation film,but it is'nt.its rated r so there's some violent scenes and nudity.the sister in law is a selection from the 8 movie boxed set called;drive in classics from;crown inter- national.i was very disappointed out by the ending,and i know most who view this movie will agree.i give sister in law 7 out of 10.its a pretty good little melodrama.