The next chapter in the Puffin ebook series that is celebrating Doctor Who's 50th Anniversary has been announced and the author of the 10th Doctor story is Derek Landy who is known for writing Skulduggery Pleasant series. The ebook will be released for download on October 23rd and you can read the synopsis below.
When the TARDIS lands on a planet that looks identical to Earth, the Doctor and Martha are amazed to find it packed with fictional characters from her childhood. But who has the power to create an entire world out of books and why? The duo must solve the mystery before their story ends.