Royal Bengal Rahashya, The Royal Bengal Mystery, is a 2011 Indian Bengali thriller film directed by Sandip Ray based on the novel of the same name by Satyajit Ray. The film was released on 23 December 2011. It was the fifth big screen Feluda adaptation of Sandip Ray in the Feluda new film series and was the sequel to Gorosthaney Sabdhan. After the demise of Bibhu Bhattacharya (Jatayu), Sabyasachi Chakrabarty declared that he would not be playing Feluda anymore. Thus, director Sandip Ray decided to reboot the series, Badshahi Angti, the first installment of which starring Abir Chatterjee as Feluda and Sourav Das as Topshe was released on 19 December 2014. But the reboot series was cancelled by Sandip Ray in March, 2016. He revealed instead of continuing the reboot series he will continue the previous Feluda film series and he will make a sequel of this movie named Double Feluda which is heading to a Christmas release in December, 2016. The movie will be a tribute to 50 years of Feluda. For the new film Sabyasachi Chakrabarty will return as Feluda and Saheb Bhattacharya as Topshe after five years.