Feludar Goendagiri (English title : Danger in Darjeeling) is a short story written by Satyajit Ray featuring private detective Feluda. It was the very first among the total 35 complete stories/novels of Feluda series. The story first appeared in 1965 in the children's magazine Sandesh. This story introduced Feluda and his cousin Tapesh alias Topshe. Topshe is the narrator of all the 35 stories/novels. Summary of Feludar Goendagiri or The Mask Rajen Babu, a respectable elderly gentleman, living in Darjeeling receives a threatening letter. Feluda, a private detective, and his cousin, Topshe, who are holidaying in Darjeeling, visit Rajen Babu to solve the mystery. After initial investigations, they suspect one of three men to be responsible for sending the letter. First, is Dr Phoni Mitra, who is Rajen Babu's physician. Since he does not have a flourishing practice and is in need of money, Feluda thinks that if Rajen Babu falls ill after receiving such threatening letters, it will help Dr Mitra make more money. Feluda also suspects Mr Ghoshal, who is an expert in antiques. Rajen Babu has recently developed a keen interest regarding antiques and has started collecting curios. Hence, he is a competitor of sorts for Mr Ghoshal. If he falls ill, he will not be able to go out of the house to buy the curios and thus Mr Ghoshal will be able to buy them. Prabeer Majumdar, Rajen Babu's son, whom Rajen Babu had thrown out of his house many years ago, after he had been caught stealing money from his father's cupboard, has also been seen in Darjeeling. He can also send the threatening letters to take revenge on his father. One morning, Rajen Babu asks Feluda and Topshe to urgently visit him. When they reach, they see that Rajen Babu is looking pale and exhausted; Dr Mitra is examining him and Tinkori Babu, his tenant, standing there, looking worried. Rajen Babu tells Feluda that he has received a scare the previous night when a masked man had come in after midnight and bent over him. The man was a horribly scary mask and Rajen Babu had been petrified. After seeing off Dr Mitra, Tinkori Babu informs Feluda that he has to urgently leave for Calcutta. He shows his concern for Rajen Babu by saying that he will inform the police before he leaves, as Rajen Babu needed protection. With Tinkori Babu leaving for