Continuity mistake: There are only two missing pieces to complete the jigsaw puzzle, and the perimeter/frame is intact. After the pastor turns the puzzle around to face Eden, there are four pieces missing, three of which are perimeter pieces. (00:04:38)
Revealing mistake: Eden's (or her stunt double's) dismount from the horse looks real, but her jumps off the platform to the ground are so soft with uneven foot landings that she has to be hoisted down. (00:11:11)
Continuity mistake: Billy pokes Wally toward the end of the plank until Wally's left boot tip is over the edge. When the camera returns to the plank, both of Wally's feet are 1-2+ feet away from the end. In the next camera shift, Wally's feet are at the edge again. (00:13:20 - 00:13:55)
Continuity mistake: Eden is holding the match almost straight up. When the camera returns to her, the match is at about a 45° angle and the flame is much smaller. (01:09:36)
Factual error: The car's cigarette lighter pops out (ready to use), and Bo exits the vehicle carrying the still-lit lighter, glowing like a flashlight. Nearly a minute and a half later, the cigarette lighter is still fully glowing - but car cigarette lighters only stay lit for a much shorter period of time. (01:20:00 - 01:21:23)
Other mistake: The corn creature is on fire, but only up to its shoulders - the flames do not spread to its head until after it goes into the corn field. (01:24:08)
Other mistake: Bo walks through the charred corn field, but her shoes do not get sooty. When she finds Eden's flower ring, the flower petals are intact, but should be burned beyond recognition. (01:25:18 - 01:25:39)