A conclusion to the trilogy finds the world's enduring heroes mustering the end of their courage when the magical barrier imprisoning dangerous creatures erodes, unleashing generations of vengeful prisoners on the land.

Seven years after the conclusion of the High Druid of Shannara trilogy, New York Times bestselling author Terry Brooks at last revisits one of the most popular eras in the legendary epic fantasy series that has spellbound readers for more than three decades.
 
Tumultuous times are upon the world now known as the Four Lands. Users of magic are in conflict with proponents of science. The dwindling Druid order is threatened...

"For centuries the Four Lands enjoyed freedom from its demon-haunted past, protected by magic-enhanced borders from the dark dimension known as the Forbidding and the profound evil imprisoned there. But now the unthinkable is happening: The ancient wards securing the barrier between order and mayhem have begun to erode -- and generations of bloodthirsty, monstrous creatures are poised to spill forth, seeking revenge for what was done to them. Young...