When an explosion rips through the chemistry lab at Raven’s Hill School and six girls are injured, the first thought is that it’s an experiment gone wrong. Then the guards start investigating and suspect a bomb. But if so – who was it targeting, and why? Ella, Becky, Maeve and Mackenzie are rushed to hospital, along with the injured Frankie and Sorcha, who team up with Jess to try to find out what actually happened. But what they discover is more sinister than even they could have imagined…
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