"Even though Soren was kidnapped and taken to the St. Aegolius School for Orphaned Owls, he has longed to see his sister, Eglantine, again. Now Eglantine is back in Soren's life, but she's been through an ordeal too terrible for words. And Ezylryb, Soren's mentor, has disappeared ... In order to rescue him, Soren must embark upon a perilous quest." --P. [4] of cover.

The Great Ga'Hoole tree is a mythic place where Soren, Gylfie, Twilight and Digger seek to find the means to fight the evil that infects the kngdom. There they will be tested in ways they never dreamed, but there they can learn to become true Ga'Hoolian owls--brave, wise, honest, true.

Text and photographs show how a family taps the sap from maple trees and processes it into maple syrup.

Nyroc, son of the evil Kludd and Nyra, is forced to fulfill his dead father's destiny and oppress all of owldom, but when doubt grows in Nyroc's heart he must make an ultimate decision between good and evil.

While Coryn and his companions journey to a wintery realm where mysterious owls live, the king becomes the target of an assassination plot and it is up to Primrose and Eglantine to save him.

The golden age which is expected from the Great Ga'Hoole Tree turns gradually worse as the owls' young king hunts for the truth about his ancestry.

Describes the life and work of Eratosthenes, the Greek geographer and astronomer who accurately measured the circumference of the Earth.