“In India, as has been shown, there is a statutory right on the part of the police to investigate the circumstances of an alleged cognizable crime without requiring any authority from the judicial authorities, and it would, as their Lordships think, be an unfortunate result if it should be held possible to interfere with those statutory rights by an exercise of the inherent jurisdiction of the Court. The functions of the judiciary and the police are complementary, not overlapping, and the combination of individual liberty with a due observance of law and order is only to be obtained by leaving each to exercise its own function, always, of course, subject to the right of the Court to intervene in an appropriate case when moved under Section 491 of the Criminal Procedure Code to give directions in the nature of habeas corpus. In such a case as the present, however, the Court's functions