"Greek and Roman demigods from the Prophecy of Seven must work together to seal the Doors of Death--and help Percy and Annabeth escape the Underworld in the process"--

Old Gods never die ... or so Athena thought. But then the feathers started sprouting beneath her shin, invading her lungs like a strange cancer, and Hermes showed up with a fever eating away his flesh. So much for living a quiet eternity in perpetual health. Desperately seeking the cause of their slow, miserable deaths, Athena and Hermes travel the world, gathering allies and discovering enemies both new and old. Their search leads them to Cassandra--an...

Jason, Piper, and Leo, three students from a school for "bad kids," find themselves at Camp Half-Blood, where they learn that they are demigods and begin a quest to free Hera, who has been imprisoned by Mother Earth herself.

"THE LIGHTNING THIEF: Zeus's master lightning bolt has been stolen and Percy Jackson is the prime suspect. He and his friends have ten days to find and return it and bring peace to a warring Mount Olympus. To succeed, Percy has come to terms with the father who abandoned him, solve the riddle of the Oracle that warns of betrayal by a friend, and unravel a treachery more powerful than the gods themselves. THE LOST HERO: Jason, Piper, and Leo find themselves...

"What if Meg had to become a Greek god? After Hercules proves he's a true hero and regains his godship, all seems right in the world. That is, until Zeus tells Meg that she can't be with Hercules because she's, well, mortal. Luckily, Hera has a solution, offering Meg a chance to prove herself worthy of a spot on Mt. Olympus--as a god. All Meg has to do is complete a mysterious quest. The mission? Oh, just to rescue her ex's current wife from the...