Emerging research in neuroscience reveals how brain structure, neurochemistry, genetics, and early life experiences intertwine to influence criminal behaviour. From abnormalities in the prefrontal cortex and amygdala to hormonal imbalances and gene-environment interactions, biological factors play a significant role. These findings prompt crucial ethical debates as neuroscience edges closer to the courtroom, raising profound questions about responsibility, rehabilitation, and human rights in an era where the roots of crime are increasingly traced to the mind itself.