User blog comment:Hermione Chase/"The Blood of Olympus" Expectations/@comment-24620863-20140302210114/@comment-3146930-20140303193205

The Prophecy of Seven takes place over the course of all the books, instead of just the last one. For example all seven of the prophecy come together in The Mark of Athena. So far the first and last lines of the prophecy have already passed, it is just the middle we have to figure out.

Also, I'm not really sure where you got that information about Calypso's island. First off, Calypso's immortality is a result of what she is. I think an outside force would have to steal her immortality from her like what happened to Zoe. Secondly, the island itself makes you immortal so even if Calypso became a normal mortal, she wouldn't die as long as she was on her island. Lastly, the curse prevents her from leaving the island so I don't think it matters if she is mortal or not.