Goofs

In the foyer, the clock's time changes inconsistently.

Bob comes home to find Darcy with pizza and a big knife awaiting him. He brings her a glass of wine which she drains and requests another. He brings in about two finger's worth in a glass, but as he sits down and eats with her the red wine is almost half full.

Around 59 minutes in, Bob is seen working under his truck, a 2000-2005 Chevrolet Blazer. The truck is suspended using a bumper jack, and Darcy contemplates releasing the jack to crush Bob (assumed).

The problem is the Chevrolet blazer used a bumper cover over a steel bumper, and did not have the slots necessary for a bumper jack. This model truck used a scissor jack to raise and lower the truck, and a bumper jack would not fit or lift the truck.

During the opening scene at the 25th wedding anniversary party, a sinister-looking character (who turns out to be an investigator looking into a series of gruesome murders) sits at the bar looking at a newspaper with the headline: "Expect Beadie To Mail Latest Vicitm's ID." The word "victim" is misspelled.

Out of everyone living in Maine, Stephen Lang's character seems to be the only one who has anything close to a Maine accent.

At 57:22, you can see the cameraman's reflection on the driver's door.

(at around 55 mins) Bob (an allegedly avid coin collector) is inspecting a penny with a magnifying glass. He is pinching the front and back of the coin in his fingers. Any amateur coin collector would never touch the face of a coin as it will tarnish and devalue it. It would be held by pinching around the rim only.