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 ille...

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!