Torchwood and Doctor Who star, John Barrowman has revealed that he is going to be co-writing a book with his sister, Carol E Barrowman.

The novel will be a sci-fi/fantasy book and will be aimed at children age 9-12. The book will follow the story of a 13 year old twin brother and sister.

This isn't the first time John and Carol have worked together, as they co-wrote a Torchwood comic strip, as well as both of John's autobiographies.