The book "Dark Worlds". In "Dark Worlds", the main character, Thomas Coville, and his friend Cook are in the heart of London, but even in this great city, secrets are hidden that they did not suspect. Having opened the gates to the mysterious "Dark Worlds", Thomas and Cook become participants in exciting and dangerous adventures. They get to know the various creatures that inhabit these mysterious realities, and learn about the ancient battle between the forces of light and darkness. Will the boys be able to survive in this dangerous world and find a way to return to their own real world? After reading "Dark Worlds", readers will be transported to an exciting journey through the interworlds, where every step can be on the edge of life and death.