User blog comment:Unknown-nymous/Who Jason will Choose/@comment-70.45.6.2-20120429013437/@comment-4531192-20120430053710

I remember that shortly after the release of The Son of Neptune, someone had put made up titles for the rest of the books on Wikipedia. This is one of those things where you shouldn't believe everything you read. The books 4 and 5 do not have titles yet.