If you're looking for an "exclusive" index or guide, it might imply:
: His use of forensic science, logical deduction, and keen observation. Historical Backdrop index of byomkesh bakshi exclusive
For detailed and up-to-date information, consulting specific fandom sites, official movie databases (like IMDb), or literary archives dedicated to Sharadindu Bandyopadhyay's works would be beneficial. If you're looking for an "exclusive" index or