I finally got to this, and is it ever fucking good. The cinematography, the score/sound effects, the acting, everything is very solid, but as always you don't have a thing if you don't have the characters, and this is bursting at the seams with great characters. And it's got the fantastic menace of the best traditional and exported (to Hollywood and noir) German expressionism. I'm usually in the camp that doesn't want to see series end after brief runs, but I am happy this next one is the last - by its nature, this plot could become tedious very quickly if you let it go on too long.