When the TARDIS lands on a planet that looks identical to Earth, the Tenth 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 Doctor and Martha must solve the mystery before their story ends!

Eleven Doctors, eleven months, eleven stories: a year-long celebration of Doctor Who! The most exciting names in children's fiction each create their own unique adventure about the time-travelling Time Lord.