Goofs

When Tommy cuts the tape around his hands at his bedroom, the piece of glass he uses has cut his hands open, wounding his hands and covering them in blood. However, when he crawls through the ventilation shaft, he doesn't leave any traces of blood behind even though he needs his hands to crawl through the shaft.

When the boy drops the DVDs in the father's den, they fall face down, in the next shot they appear face up.

The watchman fastens the seat belt across Talley's chest (under his arms), but during the close-ups of the man in back restraining him, it appears to come over his left shoulder, not his chest.

One of the hostage takers hits Walter Smith in the forehead, causing him a large contusion and bleeding. When Smith gets to leave his house and is put on a stretcher inside the ambulance, you can clearly see that there is no sign of injury where his contusion is supposed to be, and no blood either.

When Tommy and Jennifer are in the safe room, Mars smears a bloody hand print on the window and shoots the window three times, but when Jeff comes back to get Jennifer and Tommy, the hand print is less smeared and the bullet holes are not in the window.

Marshal is seen siphoning fuel out of a Mercedes. All modern Mercedes (and modern vehicles in general) are equipped with screens in the fuel line to prevent siphoning.

In the beginning scene, the captor throws the phone out the window into the street. In order to get the phone to break through glass and fly that far, the guy must be a baseball pitcher or else it would drop behind the bushes after breaking through the glass at best.

When Tally blasts the indoor glass waterfall with the shotgun, water is still pumping through, even though the transformers were blown out, and the house is on fire.

When the inside of the house is on fire, there is no smoke.

Tommy looks at his hand which is bleeding, then he crawls through the crawl space and vents, but he leaves behind no bloody hand prints.

When Talley crashes the car through the front gate, wires attached to the bottoms of the gate panels are clearly visible.

After Mars kills the brothers, you can see a TV in the background and the security cameras are still working, even though they were shot out.

There's not much point in stealing Smith's car because he will obviously report it stolen so they couldn't get very far in it anyway?