After finding out that Ship of the Dead was the last Magnus Chase book I was heartbroken, but NOW I'm over the moon again. I was so excited about the book when I found out about it that I came in on my off day just to confirm it was here! 9 Worlds is a collection of stories from Magnus' Friends and family and was a great trip back into the series. (My favorites were, of course, Hearthstone and Alex of course). Give it read!
Magnus goes away to visit his cousin Annabeth, leaving his friends to deal with moronic giants, murderous creatures, and meddlesome gods.