Nemesis is a Diabolic, a humanoid teenager created to protect a galactic senator’s daughter, Sidonia. The two have grown up side by side, but are in no way sisters. Nemesis is expected to give her life for Sidonia, and she would do so gladly. She would also take as many lives as necessary to keep Sidonia safe.

Sara is not your typical teenage girl. She wants fame and beauty. She wants to be extraordinary. After she is injured in a mysterious accident, Sara meets Jonathon Heat, rock star. And as Sara becomes ever more drawn into his powerful orbit, it soon becomes clear that Jonathon Heat wants something impossibly precious from her.

The annual joint school dance (aka the Snog Fest) is looming, and Chloe and her three best friends are determined not to repeat last year's disaster, which led to Year 9's top Mean Girl, Maggie, humiliating them online as a pack of sad losers. First they need to figure out just what's going with the strangely attractive St Thomas's boys - and so the science of BoyWatching is born...