Charlie Thorne原以為任務結束，終於可以休息，但一名神祕女子帶來一組無人能解的密碼——唯有她能破解。這次，線索直指十九世紀的查爾斯・達爾文，他曾在南美洲展開一段不為人知的探索，據說攜回一件震驚世人的祕密，卻從此消失。為了解開這段歷史謎團，Charlie展開一場危機四伏的尋寶行動。她不只要對抗時間與對手，更得面對人心的試煉。誰可信？誰是敵人？當真相愈來愈近，她才發現，真正危險的不只是寶藏本身。In this sequel to the New York Times bestselling Charlie Thorne and the Last Equation—which #1 New York Times bestselling author Chris Grabenstein called “a real page-burner”—Charlie searches for Charles Darwin’s hidden treasure in South America.Charlie Thorne is a genius. Charlie Thorne is a fugitive. Charlie Thorne isn’t even thirteen.After saving the world, Charlie is ready to take it easy in the Galapagos Islands. That is, until she’s approached by the mysterious Esmeralda Castle, who has a code she knows only Charlie can decipher. In 1835, Charles Darwin diverted his ship’s journey so he could spend ten months in South America on a secret solo expedition. When he returned, he carried a treasure that inspired both awe and terror in his crew. Afterward, it vanished, never to be seen
