At 1:19:13 -a radio with dying batteries doesn't play music slower.
At 1:14:10 -camera lens distortion.
At 1:47:40 -the camera shakes.
Why bury the shotgun in the middle of the yard when it could be better hidden within the surrounding acres of corn.
What with the sloppy police work and no fingerprints the spent shotgun shell could not have been traced back to anyone.