After a summer spent trying to prevent a catastrophic war among the Greek gods, Percy Jackson finds his seventh-grade school year unnervingly quiet. His biggest problem is dealing with his new friend, Tyson-a six-foot-three, mentally challenged homeless kid who follows Percy everywhere, making it hard for Percy to have any "normal" friends.

But things don't stay quiet for long. Percy soon discovers there is trouble at Camp Half-Blood: the magical borders which protect Half-Blood Hill have been poisoned by a mysterious enemy, and the only safe haven for demigods is on the verge of being overrun by mythological monsters. To save the camp, Percy needs the help of his best friend, Grover, who has been taken prisoner by the Cyclops Polyphemus on an island somewhere in the Sea of Monsters, the dangerous waters Greek heroes have sailed for millennia-only today, the Sea of Monsters goes by a new name the Bermuda Triangle.

Now Percy and his friends-Grover, Annabeth, and Tyson-must retrieve the Golden Fleece from the Island of the Cyclopes by the end of the summer or Camp Half-Blood will be destroyed. But first, Percy will learn a stunning new secret about his family-one that makes him question whether being claimed as Poseidon's son is an honor or simply a cruel joke.

雷克·莱尔顿，当今世界最畅销童书作家之一，也是超级畅销书“39条线索系列”的作者之一。

早年是一位英文老师及小提琴演奏者，从事教职达15年之久，非常了解青少年的心理现实和生活现实，也很有教育经验。他同时是两个男孩的父亲。

他将神话角色巧妙地融入冒险故事框架中，创作出了“波西·杰克逊系列”小说，深受全球广大青少年读者喜爱，占据各大畅销书排行榜，并获得诸多重要奖项。莱尔顿也经常到各地和大小读者交流写作与生活的心得，目前和家人住在美国得克萨斯州的圣安东尼奥。