The movements to understand the free will and choice, which is empirically apparent to the observer, is contested by brain science. Further explorations about intentions, reasons along with deception have brought the meaning of self and agency under re-examination. However, a triangulated picture with other scientific evidence may make the picture clear. The aim will be to ponder upon the free will, law and brain determinism. Since brain studies are emerging as an important interdisciplinary domain such as law and psychology, it may be interesting for readers to have a knowledge about the common-sense understanding of brain functioning and how it connects to the philosophical problems of solipsism and knowledge of other minds, freedom of actions, purpose and the will. Not apart from this, the conceptual errors and further debates speculated by the legal theorists and social scientists in the integration of law and neuroscience which has empirical, practical and ethical implications will be highlighted