User blog comment:SayuriDarling/Magnus Chase and the Gods of Asgard Official Discussion/@comment-5850470-20141013190536

Okay, here's my theory based on the synopsis and Blood of Olympus mention. Magnus Chase is Annabeth's cousin. His dad is the "uncle" that Annabeth's never met. Frederick Chase is Magnus's uncle in the synopsis who his mother said was dangerous. The reason why he's "dangerous"?

Because he associated with the Greek gods, while Magnus is a Norse demigod.

Though the synopsis kind of conflicts with my initial theory, I think there's still a chance that I'm right and his mother is the "Norse god(ess)". Remember how she "died a mysterious death"?

Not at all suspicious.