It was suspenseful but unrealistic (and at some points frustratingly so).
What I liked most was that the author explained his research his author's note, general note, historical note (what's true, what's not), and calendar notes - which was great for me as an adult and could also motivate a young adult (this book is classified as "young adult fiction") to do further research.

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"I think that if doesn't matter who betrayed her. Happiness is fleeting and must be grabbed with both hands while it lasts. Even a brief moment of it can be worth all the suffering in the world."