Baksha Rahasya  (DVD Bengali)

A Mysterious Case starts out as an ordinary complaint lodged by Dinanath Lahiri, whose attache' case, containing an invaluable manuscript on Tibet, gets exchanged with another case belonging to a fellow passenger on the train. Ace detective Feluda and his assistant Topshe, are joined in this investigation by Lalmohan Ganguly, alias Jatayu, a bumbling writer of thrilling novels. The seemingly uncomplicated case quickly acquires dangerous overtones - a criminal assault, fights and a slew of desperate men plotting out to stop Feluda, but the tough and unorthodox detective and his assistants refuse to give up.... until the mystery is solved.