Revealing mistake: The ammo box that is removed from the purse is for blank studio type cartridges, and not ballistic ammunition.
Blood Simple (1984)
1 revealing mistake - chronological order
Directed by: Joel Coen, Ethan Coen
Starring: Frances McDormand, Dan Hedaya, M. Emmet Walsh, John Getz
Continuity mistake: In an early scene, the bartender and the bar owner's wife are driving in the rain, at night. The car is a large Ford: at one point, it becomes a mid-sixties Volvo 122, then is shown as a Ford again.
Strip-Bar Exhorter: And remember, gentlemen, we're always here, two to two, A.M. to P.M., three hundred and sixty-four days and Christmas, God willing and the creek don't rise.