, written by Samuel Sheehy and published by Burlington Books , is a popular English reader often used in 3º ESO. This thriller blends international espionage with environmental themes, following secret agent Fiona Stone on a high-stakes mission. Resumen de la Trama

Below is a helpful paper with a chapter-by-chapter summary (resumen por capítulos) of Jules Verne's Michael Strogoff .

, un antiguo colega del Dr. Carlsson. Descubren un video donde Carlsson revela que ha sido secuestrado por un empresario brasileño llamado Luiz Silva

: A brilliant scientist focused on environmental repair.

Sam and Irina break into the Zarya lab at night. Using her security codes, they bypass the main vault. Inside a cryogenic freezer, they find multiple vials labeled . Irina explains that this is the weaponized version—untreatable, airborne, and capable of killing 90% of victims. Sam takes one vial and replaces it with saline solution. Just as they are leaving, alarms go off.