english the dangerous few (psychology documentary)-real stories Cody's Mother: Cody has killed a few animals. He has killed -um- he when he was three he microwaved a cat. And he has also killed a little small dog. My mom had a little Yorkshire Terrier and he said flipped it and it broke it's neck. And then he killed another cat by throwing logs on it. Narrator: Cody is just 6 But psychotherapist Brina Satterfield fears for his future. Satterfield: If the behavior continues as he heads towards adulthood, he is going to be an extremely dangerous person. Narrator: Cody isn't just going through a phase. His could be tale-tale symptoms of violence in later life. Mom: He had no remorse toward any of those animals. And she's afraid that he's going to go and … and continue with the pattern and start killing … people … because he doesn't care. She's afraid that he's going to continue and be a mass murderer. Cody: That doesn't work! Narrator: New scientific research claims we can identify children as young as four or 5 as potential adult criminals. They have brains that function differently from "normal" children. Narrator: There's growing clinical evidence that persistent criminals are different from other law-abiding people. It may be a set of biological factors that tilts them towards a life of crime. And, who knows? The science of biology may bring us the hope of some cure for the disease of crime itself. Prof. Adrian Raine: There has been a biological revolution in terms of how we understand crime.