(at around 10 mins) Outside the Randol family farm, the image of Kiera Cameron is flopped to face left which leads to the prominent mole under her right eye appearing under her left eye instead.
(at around 29 mins) Alec enters into a room to find Kiera there with the pantry door clearly shut in the background. There's a shot of Alec before cutting back to Kiera, and the door is open. After another shot of Alec and cutting back to Kiera a second time, the door is again shut. With a change of camera angle to a closer shot of Kiera, however, and the pantry door is again open.
Firearm errors: Every time the gun thugs are shown confronting the detectives and on other occasions, they cock their guns. The second time they did so since the guns were not fired they would eject the unfired rounds, but no rounds are ever ejected. This reveals the guns were never loaded. Kiera makes a similar error after picking up a gun that had been fired. She checked the magazine and then cycled the slide. Since it had been fired, another round would have loaded, making it unnecessary to cycle the slide. Normally the gun cocking sound is added via editing for dramatic effect.
(at around 55 mins) You can see Mr. Randol's mouth moves, but we don't hear him speak.