Character mistake: Right before Madison shoots the 2 police officers they show a close-up of the gun in its holster. The holster is unbuttoned. No police officer would leave his gun holster unbuttoned, especially while sitting next to a felon.
Character mistake: When Ben and Amy are in the diner discussing their college plans and getting an apartment, Ben calls her "Annie" instead of "Amy." (00:10:10)
Suggested correction: He says "Amy. Amy." He says it quickly though because he's trying to stop her train of thought since he hasn't even been accepted into college yet.