Master Advanced English (B2-C1) by Exploring the World’s Darkest Unsolved Mysteries! Are traditional English textbooks leaving you bored and unmotivated? Do you want to reach the C1 fluency level without memorizing dry vocabulary lists? The Cold Case Files: Zodiac Killer & Dyatlov Pass is your ultimate solution. This is a specially crafted Graded Reader for advanced learners, blending the adrenaline of True Crime with high-level language acquisition. Two Chilling True Crime Cases: The Zodiac Killer: Step into the late 1960s and track the phantom predator who terrorized the San Francisco Bay Area. Decode the letters, analyze the psychological warfare, and explore the mind of a mastermind who manipulated the media and evaded capture. The Dyatlov Pass Incident: Travel to the freezing Ural Mountains in 1959, where nine experienced hikers fled their tent into the deadly Siberian winter. Explore the baffling autopsy reports, the missing evidence, and the scientific theories attempting to explain the unexplainable. Your Path to English Fluency (B2-C1): Contextual Vocabulary Building: Learn advanced adjectives, formal nouns, and descriptive verbs naturally as you investigate crime scenes and read historical evidence. Complex Grammar in Action: Reinforce passive voice, perfect tenses, and advanced sentence structures used in real-world investigations and documentaries. Engaging Reading Practice: Keep your brain focused on solving mysteries rather than studying rules. The compelling narratives ensure you stay motivated from the first page to the last. Who is this book for? Ideal for young adults and adults preparing for B2-C1 English proficiency exams, ESL students looking for engaging reading material, and True Crime fans who want to improve their reading comprehension in English. Are you ready to unlock the secrets of the past while taking your English to the next level?