When Zeus, Hades, and Poseidon continue on a new quest in the search for the Helm of Darkness, they discover many things in the Underworld that Hades does not fear except a giant three-headed dog.

"Tim's used to solo time-travel but now there's a 'friend' along for the ride. When things go south after some bird spotting, Tim has to avoid being burnt alive, eaten alive or dead alive. But the Underworld is full of dangers, and the local music isn't exactly lifting his spirits"--Provided by publisher.

"Young Wonder Woman Diana is sent by Artemis to finding missing children and must journey to the Underworld to confront Hades and the undead souls to save the children.

Despite the warnings of her friends at Mount Olympus Academy, Persephone befriends bad-boy Hades, but following her mother's advice to "go along to get along" complicates her relationships with all of them.

"The myth has been told for centuries: Brothers Zeus, Poseidon, and Hades waged a years-long war against their father Cronus and his tyrannical Titans. Upon their mighty victory, Zeus split the world into three. For himself, he claimed the Sky and what fell below it. To his brother Poseidon, he assigned dominion over the Sea. And his oldest brother, Hades, would rule the Underworld. While Hades tries to make the best of a lonely situation, eternity...

"The Underworld usually isn't anyone's idea of a fun place--except for Hades. He loves the dark and even the stinky smell of sulfur! But there is one thing that Hades is not a fan of...dogs. And when Zeus and his fellow Olympians encounter Cerberus--a mean, snarling, three-headed dog--Hades must conquer his fears and tame the dog in order for everyone to continue on to the Underworld and drop off their Titan prisoner, Oceanus, back where he belongs!"--...

In this modern retelling of the Persephone myth, Haden Lord, the disgraced prince of the Underrealm, is sent to the mortal world to entice a girl into returning with him to the land of the dead.

Twelve-year-old Percy Jackson learns he is a demigod, the son of a mortal woman and Poseidon, god of the sea. His mother sends him to a summer camp for demigods where he and his new friends set out on a quest to prevent a war between the gods.

After learning that he is the son of a mortal woman and Poseidon, god of the sea, twelve-year-old Percy is sent to a summer camp for demigods like himself, and joins his new friends on a quest to prevent a war between the gods.