Doctor Who: Apollo 23 - COMPETITION!

So popular was our competition to win a copy of 'Magic of the Angels' that we thought we would have another. This time the prize is a copy of the hardback full length novel 'Apollo 23' by Justin Richards:

An astronaut in full spacesuit appears out of thin air in a busy shopping centre. Maybe it's a publicity stunt. A photo shows a well-dressed woman in a red coat lying dead at the edge of a crater on the dark side of the moon - beside her beloved dog 'Poochie'. Maybe it's a hoax. But as the Doctor and Amy find out, these are just minor events in a sinister plan to take over every human being on Earth.

To enter please email your answer to this easy question:

This book is called Apollo 23. Which Apollo mission featured in 'The Day of the Moon'?

Answers to twitter@dwasonline.co.uk

This competition is open to all and closes at 5pm on Saturday 11th February 2012.