Calum Challenger is a boy with a mission: to track down supposedly mythological creatures and capture their DNA. But while Calum and his friends want to save these beings, an aggressive pharmaceutical company wants to wipe them out. In this fast-paced, high-tech story, Calum and a group of misfit mates – a computer hacker, a freerunner, an ex-marine and a girl with a very big chip on her shoulder – criss-cross the globe, desperately trying to stay one step ahead of their enemy.

Action adventure from the bestselling author of Young Sherlock Holmes A world of adventure a mouse-click away . . . Calum Challenger is desperate to find a creature not yet discovered by anyone else. He is sure that its DNA will unlock a cure to his paralysis. But a sinister corporation called Nemor is desperate for rare DNA too. They want to make millions from it . . . and will stop at nothing to get there first. As Calum guides a group of friends in a thrilling search for a shadowy creature, it looks as if he has the upper hand. But then a spate of brutal kidnappings puts everything at risk. With Calum held hostage in New Mexico and computer-hacker Tara locked up in London, who can warn the rest of his group - ex-SAS soldier Rhino, free-runner Gecko and Natalie, the spoilt daughter of Calum's guardian -that they are hurtling headlong into the jaws of death?