Questions: Why?

North school is a mysterious school. In 2206 the principal got murdered. and no one knows why, who done it and where her body is.
Skyler is a different girl. She was born in this place, and in this place she also lost her mother. When the new kid comes to school it seems like they would solve the case, but Skyler already knows that in 'North school' nothing getting solve that easily...
What is the cursed stone? Who's Cassandra, and why have she done?
But can you know what's inside, if you look outside and see... nothing?
Liars are all around, secrets that kept for years gets out to the light.
Does Skyler want it to?
People from the past keep on hunting the little girl, things that happened, that she had no idea of. Enemies that her family got through the years.
But in this book we ask one question. Why?
Does Skyler, Nash, Jordan, Mali, January and Tom would solve the biggest question? Or they won't solve it in time and everyone they love would die?
My question is if YOU know how to keep a secret?...
Shhh...