Feluda@50 seeks to explore the phenomenon. What makes Feluda tick? What is it that we love about this man? Why is it that every Feluda film continues to run to packed houses for weeks and months on end in an otherwise struggling Bengali film industry? What is the way forward for the franchise in the years to come? What role do Feluda’s sidekicks, Topshe and Lalmohan-babu, play? The book also delves deep into Ray’s motivations for keeping Feluda cocooned from contemporary politics and never allowing him to have a love interest.