Continuity mistake: When Nick leaves to deliver presents he walks out the door and you hear the door close. When his wife goes after him with the flask you see him opening the very same door he's just walked out. (00:24:50)
Other mistake: The location of snow that accumulated on the porch cover or deck does not match the way snow accumulated on the SUV. The higher roof plus direction of the snowfall would have kept that part of the porch/deck sheltered from snow. (00:00:41)
Other mistake: The scraping sound is not coming from the man "scraping" his windshield. The snow is easily brushed off and there is no icy coating below the "fluffy" snow to realistically produce the sound of scraping ice off a windshield. (00:00:35)
