Ghurghutiar Ghotona

A 73-year-old bedridden man, he is the mastermind behind the puzzle and holds a collection of rare books. His health and limited mobility make him dependent on others, and his death triggers the story’s climax. He is wise and cryptic, challenging others with riddles.

Kalikinkar’s son, who is revealed to be a failed actor and the antagonist. He disguises himself as multiple characters to deceive others and attempt to steal his father's wealth. His manipulative and desperate traits drive the story’s suspense.

Kalikinkar’s servant who is coerced into following Biswanath’s orders. He is emotional and loyal, sobbing at the loss and the unfolding events. Gokul's role as a witness provides crucial insights into the crime.

A master detective, known for his sharp reasoning and calm demeanor. He cleverly solves the riddle and uncovers the truth behind the murder and deception. Feluda's intuition and deductive skills are central to unraveling the plot.

Feluda’s cousin and assistant, who helps in gathering clues and following the investigation. He is observant and supportive, providing a youthful perspective that complements Feluda’s wisdom.