The Emperor's Ring (Feluda, #1)

The first novel to feature the master sleuth Feluda and his teenaged assistant Topshe, this tale is full of adventure, mystery and intrigue. Feluda and Topshe are on holiday in Lucknow when a priceless Mughal ring is stolen. Feluda begins to investigate the case and finds himself hot on the trail of a devious criminal. The hunt for the ring takes them to Laxmanjhoola, and a deadly encounter with a python in a log cabin.
This is the 1st book in 12 book Puffin series of Feluda's greatest adventures.