The character of Sherlock Holmes was originally created by the Scottish writer Arthur Conan Doyle who featured him in four novels and more than 50 short stories.
After his death, his son Adrian wrote several stories featuring the famous Victorian detective, but critics say he was never that popular.
But it's the first time that the Arthur Conan Doyle estate has officially asked an author to write a new novel.
He has been named as Anthony Horowitz and is best known his Alex Rider children's series.
So was he daunted by the challenge?
"Well obviously, it was dauntingto a certain extent and you are dealing with probably the mosticonic detective in the whole history of literature.
Anthony Horowitz:
And the one thing I didn't want to do was to disappoint those reallydevout fans, the sort of Sherlock Holmes Society and people who love these books.
But to be honest with you, I actually found it fairly easy to write because I have loved those books since I was 16 years old, I've read them two or three times during the course of my lifetime – in fact, my whole life as a writer of crime fiction myself was to a certain extent inspired by Doyle and I find the book not so scary as I thought it might be."
Anthony Horowitz says he's a devoted fan and aims to produce a first rate mystery for a modern audience.
Really, the charactor Sherlock Holmes and the author Conan Doyle are all legends of all time. They have inspired countless people, whether they are fans of the novels or professional writers. As to myself, I have seen the TV series which were inspired by Sherlock Holmes. The name of the TV series is Famous detective--Conan.