The Son of Neptune released on October 2, 2012 and "The House of Hades" was released on October 8, 2013 The Blood of Olympus was released on October 7, 2014. The Son of Neptune The Son of Neptune is a 2011 fantasy-adventure novel written by American author Rick Riordan, based on Greek and Roman mythology. It is the second book in "The Heroes of Olympus" series, preceded by "The Lost Hero" and followed by "The Mark of Athena". The story follows the adventures of amnesiac Percy Jackson, a demigod son of Poseidon, as he meets a camp of Roman demigods and goes to Alaska
Thanatos Thanatos In Greek mythology, Thanatos (; , pronounced in "Death", from θνῄσκω "thnēskō" "to die, be dying") was the personification of death. He was a minor figure in Greek mythology, often referred to but rarely appearing in person. His name is transliterated in Latin as "Thanatus", but his equivalent in Roman mythology is "Mors" or Letum. Mors is sometimes erroneously identified with Orcus, whose Greek equivalent was Horkos, God of the Oath. The Greek poet Hesiod established in his "Theogony" that Thánatos is a son of Nyx (Night) and Erebos (Darkness) and twin of Hypnos (Sleep). Homer also confirmed Hypnos