Sonar Kella (), also Shonar Kella, is a 1971 mystery novel written by by Bengali writer and filmmaker Satyajit Ray. In 1974, Ray directed a film adaption of the book, also named Sonar Kella, starring Soumitra Chatterjee, Santosh Dutta, Siddartha Chatterjee and Kushal Chakraborty. The movie was released in the United States as The Golden Fortress. It is the first film adaptation of Ray's famous sleuth Feluda and was followed by Joi Baba Felunath. Plot The film begins with a school-boy Mukul Dhar (Kushal Chakraborty), who is said to be able to remember events of his previous life, and soon receives media attention. Dr. Hemanga Hajra (Sailen Mukherjee), a parapsychologist, offers his help, believing it might help him in his own research. Mukul always remains sombre and paints peacocks, forts, camels and battlescenes at midnight; he mentions that he lived in the Golden Fortress (Sonar Kella) and that their house had many gems. Dr. Hajra decides to take Mukul on a trip to Rajasthan, famous for forts, historical importance and desert landscape. Two seasoned fraudsters, Amiyanath Burman and Mandar Bose, plan to kidnap Mukul to capture the treasure. Their first attempt at the kidnapping fails when they pick up another boy, also named Mukul (Santanu Bagchi), from the same neighborhood. Alarmed by this, Mukul's father engages Pradosh Chandra Mitter a.k.a. Feluda (Soumitra Chatterjee), a private investigator, to protect his son. Feluda leaves for Rajasthan along with his cousin Tapesh a.k.a Topshe (Siddartha Chatterjee), following Dr. Hajra. On their way, they meet and befriend Lalmohan Ganguly, a.k.a. Jatayu (Santosh Dutta), a popular thriller writer. Meanwhile, Burman and Bose kidnap Mukul and push Dr. Hajra off a cliff to his presumed death at the Nahargarh Fort in Jaipur. Burman impersonates as Dr. Hajra and Bose impersonates as a globe-trotter. Dr. Hajra actually survived the fall and begins to pursue them. Feluda arrives in Jodhpur Circuit House and meets Burman, assuming him to be Dr. Hajra. Feluda begins to suspect Bose based on his clothes and his accent. Feluda even suspects "Dr. Hajra's" conduct as he appears lackadaisical in his research. Mukul keeps saying he is followed by a "bad man". Burman successfully hypnotizes Mukul, who says that the Golden Fortress is in Jaisalmer. Dr. Hajra reaches to the same conclusion by learning about the history of the Fort of Jaisalmer from a police inspector. Feluda learns that the Jaisalmer Fort is made