Subarna Sen, an Oxford University professor, travels to India after the death of his maternal uncle. He learns that his uncle's palace has a hidden treasure and decides to find it.

Guptodhoner Sondhane

Convinced that his life is in jeopardy, Satyakam, the son of a business magnate hailing from Mussoorie, approaches Byomkesh with a plea for help. The legendary detective soon heads to Mussoorie, where he finds out that the youngsters worst fears have come true. Can Byomkesh unravel the mystery shrouding Satyakam's murder before it is too late?