Why does it matter if prosecutors ‘tweaked’ testimony about ‘Scary Movie’? What does that have to do with Carlos Coy’s case? What does it have to do with getting him a new trial?
The state should only be presenting the truth; if their case rests on the word of a notorious liar, or someone who can’t remember what happened very well, it's weak. In cases where there is no physical evidence, a jury is basically making a determination of who they trust the most to tell them what happened.