After reading several books as part of Langenscheidt's textbooks (English C1 to C2 level), this was the first one which really thrilled me. So interestingly written, the story goes back to real history, which makes it easy to imagine and to have an impression of what happens. The author definitely put in some points out of history, but that doesn't matter. If you're a fan of London, you'll be able to jump into this fascinating story going back to the 17th century. I could almost smell the stench in the streets and I could hear the horse's hooves clomping through the narrow cobbled alleys. Until the end, it remains vague, whether the two historians, who were sent back from the 21st century to discover more information about the past, would change history. I've been so fully excited about this book that I can highly recommend it! It is so easy to read, that you'll fly over the lines. So, read it! Improve your language by escaping back through history! Learn some new English words in a very easy way!