Major Important Questions That Need Answering (Spoilers)

I really want to watch it again having read all of your questions! The only one I can answer is the final one: the first sentence in the short story that the film is based on is something like "Don't look now but I think we're being watched..."
It's said by the husband to the wife whilst they're in Venice and he's alluding to the sisters.

I could be wrong, though because I haven't read it since we did it in school- it's one of my favourite short stories and I'd love to get hold of the book again (-as well as the film). Sorry I couldn't be more helpful but you've intrigued me, so I'll hunt down a copy and make notes!

To be completely honest, I think you're thinking too far into it and placing too much significance in relatively trivial aspects of the film. While there certainly is a lot going on and, therefore, a lot to miss the first time you watch it, you must understand that not every little detail holds grand significance. I cannot answer all of your questions, but I will answer those that I know off the top of my head.

The first question of #4) At one point, one of the sisters states that 'second sight is a gift from God' or something like that when they are talking to Laura early on in the film. This led me to believe that they are simply faithful women who are grateful to have such a gift as second sight, which is likely why they seem to hang around the church. I truly think it's as simple as that.

#6) "Did you have a row?" means "Did you have an argument?" That's what the word 'row' means, though I must admit that I haven't heard the word used outside of this film in a long, long time. And yes, John and Laura did have an argument - about the validity of the sister's prophecies and the POSSIBILITY that Laura is only believing what she wants to belive and ignoring the fact that their 'daughter is dead. Dead, dead, dead, dead, dead' as John so eloquently puts it during their argument. The police chief guy only asks John if he and his wife had an argument because he doesn't know them and doesn't understand the dynamic of their relationship. Cops always ask things like this to uncover possible motives for crimes.

#7) When John says that, he is talking about happiness/inspiration/hope - whatever you want to call it. He even says that after having talked to the women and woken up from her little fainting episode at the restaurant, Laura seemed much happier, and that she seemed to be more accepting of their daughter's death. She had no real means of coping with it at the time, but meeting the sisters and having them tell her all those things about their daughter still being 'with them' and laughing, she felt much more reassured that there is more than what meets the eye and at peace with the loss. I don't know what you think John was looking for - you said he goes looking for 'IT' - but I'm pretty sure he's just trying to find his wife and/or the sisters because he's still confused about whether Laura really left Venice or not after having a vision of her on a funeral boat with the sisters and mistaking it for physical reality. In fact, he is so confused that he goes to the police and prompts an investigation on the matter.

#8) Have you ever experienced trance? Neither have I - not like that, at least. But people in a trance state do and say things that don't always add up to those outside of that state because that state itself is not aligned with what we perceive to be reality. It does look like she's groping herself and having an orgasm, but it's just an unconscious bodily reaction while her experienced consciousness is temporarily in a different state/dimension/realm that we call trance.

#9) The bishop wakes up during the final chase sequence, around the time when John dies, because he has the same strange feeling as everyone else involved - that something is awry. Dark foreboding, danger. It stirs him in his sleep. I feel like he seems to know, unconsciously, that something bad is going to happen to John. Watch the scene where John almost falls to his death in the church again, and the conversation he has with the bishop afterwards. He states at one point something like, "I wish I didn't have to believe in prophecy... but I do." The shot of him waking up during that time is a cinematic device used to reinforce the fact that all of these characters - the sisters, the bishop, John, Laura, the killer - are all connected through these mysterious happenings in Venice.

#11) Hahaha, that lady. I don't have an answer for you, but I asked myself the same thing. She doesn't even say anything lol. I just think it's funny how she's just... there. Really doubt there's any significance to her character, though. Probably just had to pee and ended up listening to a pretty interesting conversation.

#12) That is John's foot that breaks the glass. Watch the scene again. Pay close attention to the details of the setting. He follows the killer all the way up a winding stair case into this little room at the top, she slashes his throat, and he ends up lying on the ground and bleeding out. His body twitches a lot, as does his foot as it breaks the glass. Blood drips down from the little window where his foot pokes out and that his his blood because he is very obviously dead.

#13) The first person to answer this was pretty much correct. The title was derived from somewhere in Daphne du Maurier's original story. Actually, I have the Criterion DVD and there is an essay included in the booklet written by David Thompson. He says about the title: Her tale (Daphne's) begins intriguingly enough: "'Don't look now,' said John to his wife, 'but there are a couple of old girls two tables away who are trying to hypnotize me.'"

I know I didn't touch everything, but I hope this helps at least a little bit. One of my favorite things about this movie is that it doesn't exactly spell things out for you and really requires multiple viewings. Thompson's essay makes a good point: "...John's work is restoring churches - in particular, mosaics" and "like a mosaic, Don't Look Now is a collection of fragments that make sense only when arranged by a master craftsman."

Keep looking, but don't focus so much on the smaller details that you miss the bigger picture. :)

I can give you a bit more information about the trance. Nicolas Roeg and Julie Christie attended a seance hosted by the medium Leslie Flint, and he asked all people present to "uncross their legs", and Roeg just decided to incorproate it into the film.

As for Heather's "orgasm", I think this is a significant scene in the context of establishing the authenticity of the sisters. It is is basically "proof of life": she is channelling Christine, and the previous night John and Laura had sex. Whether Christine is mimicing her mother, or Heather is watching John and Laura "at it" through Christine's eyes it basically lets Laura and the audience know that Christine has been present the whole time, and that Heather is the real deal.

As for Wendy's brooch, it is a piece of subliminal imagery and the shape keeps popping up throughout the scene. The shape even appears in the mosaic that John is repairing, and it resembles the shape of Christine's body as John plucks her from the lake. Along with the use of red and the presence of water Christine's death is recalled all the way through the film.

Interesting...thanks to both of you for the input there. I think I have a little better understanding of the seance now...that seems to make a whole lot of sense. Gosh, I am going to watch this movie again!

You know one point that you brought up that NOONE talks about is right before the sisters sit down with Laura and the blind sister pulls out the red mac and then quickly shoves it back in her pocket!!

Also 27.30 into the film I think that's just showing the curtains while the wind blows in their room

11) That lady is the lady who keeps de bathroom clean. You can also tip her for extra toilet paper. Not a very common thing to see nowadays but some toilets still have that lady sitting there.

1) At 27 minutes and 30 secs into the movie, what in the hell is on the screen?