Errors in geography: Nick and Sara are sent to investigate a "suspicious body" near Ely, Nevada. Ely is over 240 miles (a four-hour drive one way) from Las Vegas. Even if they took no time at all to excavate the body (which Nick says will take a long time), their trip would have taken over 8 hours. There is no way they could have completed the trip and investigation in the time alloted.
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