As Petra and Calder are drawn clue by clue into a mysterious labyrinth, they must draw on their powers of intuition, their problem solving skills, and their knowledge of Vermeer.

• 以通俗易懂、引人入胜的表述方式介绍了有关生长发育和医学问题的最新研究成果，并且针对这一特殊阶段要经历的心理和生理变化，提出了很多实用性的建议。