Following his last thrilling adventure Sherlock Holmes has been sent to live in Oxford to focus on his education. But something strange is happening in the university pathology labs. Body parts are being stolen from corpses and are being posted one by one to an address in Wales. What can these sinister goings-on mean, and what message is someone trying to send? In an attempt to find out, Sherlock travels to Wales and finds himself in an isolated manor house where strange things have been happening. Can he get to the bottom of another baffling mystery? Sherlock Holmes: think you know him? Think again.

Sherlock knows that Amyus Crow, his mysterious American tutor, has some dark secrets. But he didn't expect to find a notorious killer, hanged by the US government, apparently alive and well in Surrey — and Crow somehow mixed up in it. When no one will tell you the truth, sometimes you have to risk all to discover it for yourself. And so begins an adventure that will take Sherlock across the ocean to America, to the centre of a deadly web — where life and death are cheap, and truth has a price no sane person would pay ...

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

Fourteen-year-old Sherlock has come up against some challenges in his time, but what confronts him now is completely baffling. His tutor, Crowe, and Crowe's daughter, Ginny, have vanished. Their house looks as if nobody has ever lived there. Neighbours claim never to have heard of them. Sherlock begins to doubt his sanity, until a chance clue points him to Scotland. Following that clue leads him into the throes of a mystery that involves kidnapping, bodysnatchers and a man who claims he can raise the dead. Before he knows it, Sherlock is fighting for his life as he battles to discover what has happened to his his friends.