"With Sacred Skies, Hostetler brings his trilogy to a close, but the close isn't an end. It's a birth to readers' imaginations for years to come." -Brendan Walsh, award-winning author of The Century's Scribe

Salem Swan can barely recognize himself as the same boy who a year and half ago stepped onto the strange and mysterious ship called Curiosity. He's found a family in a crew who used to be strangers, love in places he never before thought to look, and most of all a purpose in becoming the champion of a mythical world called the Fringe which is on the verge of disappearing.

But the evil spreading through the world has grown more powerful in recent months. Left unchecked, the Regulat will surely find a way to eliminate the peaceful world Salem and the crew are fighting to protect.

New enemies, allies, powers, and realizations drive Salem, Juniper, and Zee to their extreme limits. In the fastest-paced adventure they've undertaken yet, they will ascend into the sacred Himalayan mountains in search of a lost creature, speak with ghosts as real as living people, and rally a global army of diversity against the forces seeking to destroy them. All as the Fringe and Commons grow ever closer towards either colliding or separating from each other forever.