When Ben Tracey sets out with his cousin to spot hen harriers - a protected bird of prey - he doesn''t expect to stumble upon a secret operation. But renegade researchers are using a military base near the birds'' nest site to develop Project Vortex: a project concerned with a top secret, utterly illegal and highly lethal weapon!

As the clock ticks down, Ben and Annie are in a race against time to prevent disasterBut their enemies are determined to stop them and they will go to any lengths...

Format Häftad Omfång 288 sidor Språk Engelska Förlag Penguin Random House Children's UK Utgivningsdatum 2009-02-05 ISBN 9781862302815