We’ve all heard of Sherlock Holmes, the world’s most famous detective that just happens to be a made-up literary character. But just because he wasn’t a real flesh-and-blood person, doesn’t mean he hasn’t left an impact. Director Mark Dindal (Chicken Little) is going to tell the true story of how real crime letters are still sent to his fictitious house.

According to Hollywood Reporter, Dindal will make his live-action film debut with Sherlock’s Secretary for Walden Media and Nash Entertainment. Julie Golden (The Calligrapher) is set to write the screenplay.

Detective Sherlock Holmes “lived” at 221b Baker St, an address that has since become the Sherlock Holmes Museum. To this day, there are still letters arriving from real people seeking his help to solve crimes. This is not a very proud declaration of people’s intelligence, but on the plus side, it’s good to see that some people still hand-write letters. The film will revolve around the person living at that address, who receives one of the letters and decides to try and solve the case on their own.