Charlie Thorne and the Lost City

In this action-packed middle-grade adventure, Charlie Thorne, a young genius known for her code-breaking skills, is drawn into another global mystery. Approached by the enigmatic Esmeralda Castle, Charlie must decipher a code with roots in Charles Darwin's 1835 journey to the Galapagos. This quest leads her on a high-stakes treasure hunt to find a lost city, blending historical intrigue with contemporary espionage. Parents can expect a fast-paced narrative filled with puzzles, scientific references, and a strong, intelligent female protagonist. It's suitable for readers aged 10-14 who enjoy mysteries, adventure, and historical connections.

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 jou