The story is about a woman suffering from chronic depression in a small New England town.
It opens with silhouettes of buildings set against unsettling dawn skies. You get the feeling that something's wrong in this town, and has been for a long time.
The pounding surf intensifies the mood.
Now here's (above) where the really original part begins. A fishing boat is seen in an ominously tempestuous sea. One still frame can't do this image justice. A ship in a daytime shot usually symbolizes hope and escape. Not so here.
Far from being a symbol for escape, the boat may be seen as a sentry preventing escape and confining the townspeople to their prison.
The film trucks out of a porcelain image of the ship. The painted image is a happy one but the audience knows better. Seeing the creepy ship in this nice old-fashioned context firms up our conviction that whatever's wrong in this town has deep roots, and that the towns people might even have had a hand in covering it up.
This isn't a horror film, so the supernatural element I'm talking about isn't part of the plot. Even so, it's important. Sherlock Holmes stories are like that. There always a supernatural subtext in them, and it makes the stories more interesting.
Fascinating, eh?