Investigation is almost exclusively in the domain of Police.role of a judge comes into play only after the charge is framed. FIR often gives a glimpse of the true nature of the story. but the nature of investigation and hostility of genuine witnesses compel a judge to have recourse to sec-165 Indian Evidence Act at the cost of justice not delayed.what is preferable, a delayed justice based on tardy process of sec-165 IE Act or, justice on perfunctory investigation and mendacious prosecution witnesses?