Jump (Twinmaker 1)

Clair lives in a world revolutionised by d-mat, a global teleport system that allows people to transport themselves instantaneously around the world. When a coded note promises Improvement - the chance to change your body any way you want, making it stronger, taller, more beautiful - Clair thinks it's too good to be true, but her best friend, Libby, is determined to give it a try.What starts as Libby's dream turns into Clair's nightmare when Libby falls foul of a deadly trap. With the help of Jesse, the school freak, and a mysterious online friend called Q, Clair's attempt to protect Libby leads her to an unimagined world of conspiracies and cover-ups. Soon her own life is at risk, and Clair is chased across the world in a desperate race against time.