Bhaduri Moshai is a former Central Bureau of Investigation (CBI) officer. His real name is Charu Chandra Bhaduri. After retirement, Mr. Bhaduri likes to solve mysterious cases privately. He runs a detective agency, Charu Bhaduri Investigation, with headquarters in Bangalore. His assistant, Kaushik lives in Kolkata. The narrator of all the stories is a relative of Kaushik. One comic character, Sadananda Basu, also joins sometimes with them. Bhaduri Moshai loves to solve crossword puzzles.[3]