After learning that humans are headed toward his hidden home, Firedrake, a silver dragon, is joined by a brownie and an orphan boy in a quest to find the legendary valley known as the Rim of Heaven, encountering friendly and unfriendly creatures along the way, and struggling to evade the relentless pursuit of an old enemy.

"Percy Jackson isn't expecting freshman orientation to be any fun. But when a mysterious mortal acquaintance appears on campus, followed by demon cheerleaders, things quickly move from bad to diabolical. In this latest installment of the blockbuster series, time is running out as war between the Olympians and the evil Titan lord Kronos draws near. Even the safe haven of Camp Half-Blood grows more vulnerable by the minute as Kronos's army prepares...

Just after finding Bianca and Nico, two newly discovered half-bloods, Percy, Grover, Annabeth, and Thalia end up trapped between a helicopter and a manticore. Artemis and her Hunters save the day, but Annabeth disappears over a cliff; then Artemis rushes off to hunt a dangerous monster. Back at Camp Half-Blood, the Oracle foretells that Artemis must be rescued and makes a prediction that bodes ill for one of their number?but which one? Percy, who...

All year the half-bloods have been preparing for battle against the Titans, knowing the odds of victory are grim. Kronos's army is stronger than ever, and with every god and half-blood he recruits, the evil Titan's power only grows. While the Olympians struggle to contain the rampaging monster Typhon, Kronos begins his advance on New York City, where Mount Olympus stands virtually unguarded. Now it's up to Percy Jackson and an army of young demigods...

"As Lucas and Clara set out to investigate some mysterious happenings in Wrenly, they discover a young horse with wings that is lost and in danger"--

Crusty dragon Miss Drake's new pet human, precocious ten-year-old Winnie, not only thinks Miss Drake is her pet, she accidentally brings to life her "sketchlings" of mysterious and fantastic creatures hidden in San Francisco, causing mayhem among its residents.

Details three of Percy Jackson's adventures, as he battles all kinds of mythological monsters in the modern world, and also features interviews with Connor, Travis, Clarisse, Annabeth, Grover, and Percy; a map of Camp-Blood; and more.

"Describes the features and characteristics of wicked and mischievous fantasy creatures in a quick-reference format"--

"Describes the features and characteristics of mythical creatures in a quick-reference format"--

Visiting her grandmother in Australia, Livy, ten, is reminded of the promise she made five years before to Bob, a strange, green creature who cannot recall who or what he is.