When Billy drops down into the chimney to look for the money box, the burn length on the first match he lights changes with multiple camera angles, from the front camera shot (short burn length), and the rear camera shot (long, almost to his fingers). Also, other than for a suspense affect, why is he using multiple matches for minimal light? Earlier in the movie, it was clear the children were in possession of working flashlights.
Jack's scar constantly varies in size, shape and severity, also moving all over the place on the right side of his forehead throughout the course of the movie.
In the last scene with Jack sitting on the porch with Allie, her right hand position fluctuates from gently rubbing on the back of his neck during close-ups of Jack, to resting still on his shoulder in shots of them together.
When they are using Morris Code to communicate with Allie, Jack has Sam tap out his name: dot-dot-dot (S), dot-dash (A), dash-dash (M), which is correct. But when Allie answers back, supposedly "How are you?", she also includes an S in her signaling.
The construction of the buildings shown throughout is neither of type that was popular or legal in the United States, the setting of the film.
This is particularly notable in the library and in the office in the town. The windows and the doors are not types used in North America, especially the United States,
This is particularly notable in the library and in the office in the town. The windows and the doors are not types used in North America, especially the United States,
The mock-up of an English newspaper says "10.000 £ missing". An actual English-language paper (the movie is supposed to be set in Maine USA) would say, "$10.00 missing". The use of "." for a separator rather than "," and the placement of the pound sterling sign at the end betrays its European (Spanish) origin.
Around 00:12, when Sam picks raspberries, they are actually just raspberries stuck onto another plant (mark the leaves!). It is best visible when he picks his last one and there is no receptacle left, just the end of a green stem.
When Porter rings the bell outside the gate, the ivy that sticks out from the many creeping plants is quite visibly a fake one.
It's clear that from the vegetation around the house and in the town that while the film is set in the United States, it is not filmed there.