"The Gregory Circle" is a science fiction novel by the famous writer Murray Leinster. In this book, the author reveals the story of a mysterious object in space, which turns out to be the key to unlocking the secrets of the universe. The main character, John Gregory, goes on an exciting space journey, where he has to solve mysteries and face unpredictable challenges. The book "Gregory's Circle" is full of adventures, riddles and philosophical thoughts that will leave the reader enthralled from the first page to the last.