Revealing mistake: Davis, the psychiatrist, is the second man to be killed. Although he was shot at five times, only the first two wounds, which are the highest, give blood, while the lower and later three do not.
Revealing mistake: When Crystal sets fire to the meth lab, she flings her lighter in a straight direction towards the front door. But you can see that the fire does not start there: it starts in the middle of the front porch, more than three feet from where her lighter landed.
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