This has got to be my favorite book of all time. The one that I reach for to reach again when traveling so that I'm not too distracted to hear the bording call to the plane or when the relatives call me to dinner. Yet entertaining to read over and over again. I love the juxtoposition of the four worlds and how they come together in the end. I like Mr Chalkers writing style but have to admit, some of his series make me wonder about his dream world. This won't be one of them that worries you over much. It is full of charismatic characters and inventive worlds in the best style of hard core science fiction.