The best book I've ever read

The best book I've ever read is called La Declaración. This book was written by Jackeline Kelly. I read this book at third of ESO during the first term. At the beginig, it was a bit boring but when the action began, then it was vey mysterious and fascinating. I remember that I read La Declaración in only a week because, as always happens, because I wait one week before the exam to try to remember the plot (and the details). Here is the plot. As it was the best book I have read, I understood it very well and in consecuence I got the best mark of a reading exam (of all the reading exams I've taken for always).