Mark Dindal, who helmed the Walt Disney Co. hit "Chicken Little," will make his live-action directorial debut on SHERLOCK'S SECRETARY for Walden Media and Nash Entertainment, says The Hollywood Reporter.

The story is based on the little-known fact that real letters are being sent to the fictitious home of Sherlock Holmes, the world's most famous detective and one of the 19th century's great literary creations. Holmes famously resided at 221b Baker St., and the address -- now the Sherlock Holmes Museum -- has been receiving letters from people seeking Holmes' help in solving real crimes.

The film will center on the person living at that address, whose world is turned upside down when he gets one of these letters and decides to take on a real case.

Julie Golden ("The Calligrapher") is attached to write.