Instruct: Classify Amazon reviews into positive or negative sentiment
Query: An interesting continuation

The story continues with the heroes and heroines trapped in the otherland network and the Grail Brotherhood about to launch their long overdue masterpiece...Immortality. But the plot unfolds in a rather unexpected manner, which gives Tad Williams to go on tho a fourth book. Some may find the series too long, but the way Tad writes this story, it's better to have an ending piece after this one. Well sustained story. I would highly recommend this book.