Thea Stilton And the Secret City written by Elisabetta Dami is a children?s book, narrated by its title character Thea Stilton, a mouse. Thea Stilton is the adventurous sister of Geronimo Stilton. She is a special correspondent for The Rodent?s Gazette, Mouseland?s most popular newspaper. Thea Stilton and the Thea Sisters – Nicky, Colette, Pamela, Paulina, and Violet – set off to Peru when they all learn that Paulina?s friend is in danger. An amazing adventure is in store for them as they climb the Andes mountain in search of a missing archaeologist. During their climb, they get many clues to a secret hidden city. The plot gets exciting, and they go in search of the mysterious treasure in the secret city of Incas.