Having seen the whole thing now, I think Part 1 may have been a bit drawn out.
Parts 2 & 3 kept things moving along at a much better clip.
The mannerisms of the main character were fantastic.
I think Part 2 was my fave one... the talk with the not-hooker was pretty revealing as to what was going on, but not giving the whole game away. Followed by a Marilyn... well...
Never expected the ending to resolve quite the way it did.