In this story Jason goes back in time with his cat, Gareth. They visit nine times and places and make a difference in a cat's life, a person's life, and history in general. This book is fascinating partially because at the end, Gareth tells Jason that they went on these journeys in order to train Jason as a sort of coming of age thing. This means that students reading this can go back to each section of the book and think about what Jason was meant to learn each time- advanced critical thinking! This is also a book that lends itself to further research (especially since there were some historical inaccuracies), and might be a good basis for a unit on fantasy or historical fiction writing.