中文简介：

伊迪丝·特威福德曾经是世界知名的儿童文学作家，但现在，她唯一的遗产是传闻中的特威福德密码：一系列隐藏在她书中的线索，指向……什么？没有人知道，但这并不妨碍人们对此展开猜测。

史蒂夫·史密斯生活中各种不幸的事都与伊迪丝·特威福德有关。小时候，他发现了特威福德的一本书，上面写满了奇怪的符号。他把书拿给伊尔丝老师看，老师确信这本书里有破译密码的答案。几周之内，伊尔丝老师就消失了，史蒂夫不知道她是死是活，以及她是否是对的。现在他决心要找出答案。

但是特威福德代码中隐藏着一些秘密，有些人不惜一切代价想要拥有，而史蒂夫并不是唯一一个在追踪它的人。解开这个世纪之谜的竞赛开始了，你能第一个解开吗？

英文简介：

Edith Twyford was once a world-famous children's author, but now her only legacy is the rumoured existence of the Twyford Code: a series of clues hidden in her books leading to... what? No one knows - but that hasn't stopped the speculation.

Steve Smith can trace nearly all the bad things in his life back to Edith Twyford. As a child he found one of her books, covered in strange symbols. He showed it to his teacher, Miss Iles, who was convinced it held the key to the code. Within weeks Miss Iles had disappeared, and Steve has no idea if she is dead or alive - or if she was right. Now he's determined to find out.

But the Twyford Code hides secrets some would do anything to possess, and Steve isn't the only one on its trail. The race is on to solve the mystery of the century. Could you get there first?