Goofs

There is a scene where the main character brings a sandwich on a plate, a bottle of water, and a large knife out to her porch and lays them on a table. Later she brings out a bottle of bleach.

The sandwich, water, and bleach appear and reappear throughout the rest of the movie. The sandwich also changes. It goes from rectangular to triangle shaped cuts and it appears to have more filling at times. The plate also moves.

Around the 19:36 mark there is a scene cut of less than a half second before the cut to black and open of a new scene. It's odd because it had to be spliced in to see the mistake but no reason to do it. Anyhow, for a quick flash you can see in the lower left half of the screen, a water bottle and an open full script that seem to magically appear on the table, and then a cut to black and it is gone faster than Keyser Söze.

Also, kudos if you got the K.S. reference.

Woman moves her arm straight down her side when placed on plastic sheeting.

When she is bleaching the blood stain on the porch, she pours bleach on her hands then as she runs into the house crying she covers her face. Pure bleach to the face would cause some serious issues.