An previous man of Ghurghutia village close to Palashi invited Feluda to resolve a puzzle. The person's pet parrot recites a numeric code which is definitely the mix variety of his iron chest. The parrot says— Trinayan, o trinayan, ektu jiron. When Feluda solved the puzzle he gave him 4 uncommon books of Émile Gaboriau as a reward. The very subsequent day when Feluda is returning in direction of Kolkata with Topshe, smelled one thing fishy within the previous man's home. He began final time investigation and it revealed that each one was a made up plan and there was a homicide behind the complete plot.
