Near the beginning when they find the victim's body, Sam says "she swallowed her tongue." It's impossible to swallow your own tongue.
Near the beginning, the "dead" Jennifer blinks as CPR is being done.
The M.E. assistant says the girl's blood alcohol content (BAC) was a "2-0" or twenty percent. What he should have said was a POINT 2-0, as a BAC of 20 is not possible- one would die well before they could consume enough alcohol to reach that level. A toxic level is well below one percent, usually as low as .45.