'My name is Benjamin Tooth. This is my journal.
One day I will be remembered as the greatest scientist that the world has ever known and so it is my duty to mankind to record my thoughts that future generations are able to study the progress of a genius.
I am eleven years old.'

These are the recently discovered journals of Benjamin Tooth: alchemist, inventor and discoverer of the Windvale sprites. They chronicle his journey of scientific discovery from pompous boy to mad old man in his pursuit of the sprites on Windvale Moor. The sprites hold the key to eternal life, and Tooth is determined to capture it.

Mackenzie Crook is a hugely diverse actor who has played a wide variety of roles, from Ragetti in all three of the record-smashing, swashbuckling Pirates of the Caribbean films, to the wonderful character of Gareth in The Office and the critically acclaimed Konstantin in the Royal Court's version of The Seagull. He has also appeared in a whole host of other works, including films such as Finding Neverland, Brothers Grimm and The Merchant of Venice, as well as in the BBC Radio version of Adrian Mole, and the stage version of One Flew Over the Cuckoo's Nest in London's West End. His debut children's novel The Windvale Sprites was published by Faber in 2011.