Sara B. Elfgren & Mats Strandberg 
Circle [EPUB ebook] 

One night, when a strange red moon fills the sky, six school girls find themselves in an abandoned theme park, drawn there by a mysterious force. A student has just been found dead. Everyone suspects suicide. Everyone — except them.In that derelict fairground an ancient prophecy is revealed. They are The Chosen Ones, a group of witches, bound together by a power, one which could destroy them all. But they soon learn that despite their differences they need each other in order to master the forces that have been awakened within them. High school is now a matter of life and death. Because the killing has only just begun.