Orpheus (north east Danube valley) and even describes him wandering into Hyperborea and Tanais (ancient Greek city in the Don river delta) due to his grief. The story of Eurydice may actually be a late addition to the Orpheus myths. In particular, the name "Eurudike" ("she whose justice extends widely") recalls cult-titles attached to Persephone. According to the theories of poet Robert Graves, the myth may have been derived from another Orpheus legend, in which he travels to Tartarus and charms the goddess Hecate. The myth theme of not looking back, an essential precaution in Jason's raising of chthonic Brimo Hekate
The House of Hades to do what is right." "The House of Hades" won the Goodreads Choice Award for the Best Middle Grade and Children's Book of 2013. On the same day as the release of "The House of Hades", Rick Riordan announced its sequel, "The Blood of Olympus", the last book of the series. The cover, featuring Jason, Frank, Hazel and two giants, was released on May 14, 2014. The first chapter of the story was released along with "The Staff of Serapis", a crossover between "The Kane Chronicles" and "Percy Jackson & the Olympians". "The Blood of Olympus" was released on October