"The First Horseman" is an exciting thriller written by the British writer John Casey. In this book, the author transports us to the near future, where the world is on the verge of a huge catastrophe. The epidemic that has covered the planet is spreading rapidly, leaving only chaos and destruction in its wake. The main character, an experienced doctor and expert in virology, goes on a journey through different corners of the world, hoping to find a vaccine that can save humanity from extinction. The further he progresses in his mission, the more collisions he experiences as he races against time constraints and the mercilessness of the disease. "The First Horseman" is not only a fascinating science fiction novel, but also a surprising thought about what it might be like if the threat of a pandemic became a reality. This book will leave you on the edge of your seat, helping you to understand the value of life and the importance of solidarity in the face of the threat of total destruction.