One of his top ten time travel books, as shared at the Guardian:Percy Jackson And The Last Olympian by Rick RiordanRead about the other titles on the list.
I consider this a time-travel book as elements of a mythic past come crashing into the modern day America. I have always been a fan of the Percy Jackson books – the mix of adventure, myth and humour is absolutely perfect – but this is my top choice. In this fifth installment, Percy, the demi-god son of Poseidon, has turned sixteen and the fate of the world is upon him. (That's what it feels like when you're sixteen!) Ultimately he and his friends must put up a final stand to protect Mount Olympus, the home of the gods. Threaded through sequences of non-stop action, there are many twists and mysteries, along with a triumphant and very emotional conclusion. What's not to like?
Percy Jackson is among Casey Lee's ten favorite book series.
Also see Michael Brooks's top ten list of time travel books.
--Marshal Zeringue