Continuity mistake: Before Cathy goes to the office to take Frank his dinner, she suggests Sybil wrap up his meal. However, she hands her own plate to Sybil (she was sitting at that place eating only minutes before). Frank's meal is still sitting on the table in his place when Cathy takes the Tupperware and leaves.
Continuity mistake: In the scene where Kathy first spots Mr. Deagan and challenges him on the patio, she is standing above and looking down at him as seen by the reporter and photographer from the living room. In the next shot, close-up, their heads are on a par. Cut back to the living room, she's again looking down at him as seen by the reporter. Close-up again, even again. Come to think of it, the director may have intended this.
Continuity mistake: The movie starts in the fall, in Connecticut (New England), so the bright red leaves on the trees are just fine, although the bright green grass is a little less likely. By Christmas there are a few fallen brown leaves, but most of the leaves are still on the trees and still bright red. The grass is still bright green, too, which, considering it would by rights at least have gone dormant and at most been covered by snow, is a bit odd. In early January, when the young boys are coming home from football practice (normally that would have wrapped up in November, but I suppose the warm weather extended the season), they are coming home in sunshine, when it suddenly starts to snow - on the bright green grass and bright red leaves. And at the end, when it's supposed to be March or so, apparently there are roses in bloom (there's a freshly cut one on Cathy's desk) and the apple trees are in blossom, which normally happens in late April or so. I guess Hartford in 1957-58 was the first place to exhibit signs of global warming.
Continuity mistake: When Cathy and her friends are having daiquiris, Cathy brings the pitcher around and says "would anyone like another daiquiri?" and the first woman refuses - and so does Nancy. As Cathy pours one for El, the first woman raises her glass to her lips. The camera shot changes to El and she says "all right." Now the other woman's drink is on the table without enough time for the change. Also, Nancy's glass now has more in it, even though Cathy didn't pour her any.
Continuity mistake: The morning after Frank hits Cathy in the face, she rearranges her bangs so that the mark is covered. As she is talking with her friend El (on the front porch) and nervously touching her hair, the mark becomes visible to El. In the next shot, Cathy's bangs are smoothed over her forehead, covering the mark, even though she hasn't touched her hair again.
Continuity mistake: In the scene where Cathy meets Raymond to say good-bye the time is reversed: When Raymond receives her call at his shop it's almost dark. When we see her walking up to the diner where he is waiting it's quite a bit brighter, and finally, when they talk in the street, the man who shouts at him to take his hands off her is standing in the sun.
Continuity mistake: In the scene where Julianne Moore is about to go to out with Dennis Haysbert, she is wearing a buttoned up sweater over a blouse and a coat; when they arrive at the restaurant she takes off her coat, but is no longer wearing the sweater. The scarf she wears with a tight knot when they drive off is tucked loosely into her sweater at the farm, but when they arrive at the restaurant its tied the same, rather peculiar way as before.
Continuity mistake: When the train with Raymond leaves the station there's a strange change of light: First the platform lights are on although it's only 4.30 p.m. and it looks quite bright when Cathy arrives at the station. They illuminate the platform brightly throughout almost the whole scene, but in the last shot on Cathy the lights are dimmed and the platform is totally dark.