Jahangirer Swarnamudra (The Gold Coins of Jahangir) is a Bengali detective story written by Satyajit Ray starring his famous character Feluda. First published in 1983 in sandesh.
Plot synopsis
The trio of Feluda, Jatayu and Tapesh has been invited to Panihati to investigate the case of a missing gold coin of Jahangir. The client had a collection of 12 gold coins but on his last birthday, one of them was stolen by one of his most trusted invites. He invites the same group of people this year and asks Feluda to catch the culprit while hiding his true identity.
References
Jahangirer Swarnamudra Wikipedia(Text) CC BY-SA