In the first book of this series 'Orders of the Dimensions', Jane Kremowski and her team of graduate students work with their professor to make a box which will enable them to visit other dimensions. In this, the sequel, encouraged by her friend Amber, Jane, yet again finds herself persuaded to enter the box. This a sequel, in every sense of the word, and so I would strongly recommend that 'Order of the Dimensions' is read first. The characters in this book are the same. Of course, in the different dimensions, they are totally different people, with different partners and lead totally different lives. Fans of the first book will love the way that the original characters continue to evolve, and the villain becomes even more fiendish. To tell more, I think, would spoil the book, all I can say though, is that this is an exciting, multi-faceted science fiction thriller, with plenty of twists and turns and a plot which will keep you on your toes. So, give your brains a good scrub before you start reading this, otherwise you may never keep up. This is an amazing book, and a total must for science fiction and time travel fans. The author has written a fast, exciting story, with a plot which will keep you guessing. And, for those who love this book, the author has just released the third book in this series 'Final Orders.'