I saw this on tv years ago.
It would have been BBC because ITV never show interesting films.
I did not get it,felt it was boring.
But watching it again I think it is a great but bleak film.
This is a sleazy private eye drama.
This is well acted and well scripted and it requires the viewer to pay attention to what is going on.
I don't know what it is about 1970s American films,try to make a list of happy ones,it would not take long to do.
It always surprises me how older films have casts that are full of good performances by people I don't recognise.
More modern films often have bad performances by actors I am sick of seeing.