Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Charlie on EDGE!!!!

And before he completely lost it. But, this is by far the most realistic biker movie I've ever seen. Charlie plays a real life undercover cop with issues that infiltrates a top gang run very effectively by Michael Madsen, minus the obligatory hair and tatts. Charlie's descent into a self-imposed hell is a real treat for fans. ...Hard to believe this is a true story.