The 15 Keys 2: Darkness Falls

The 15 Keys 2: Darkness Falls is the direct sequel to ''The 15 Keys. ''It follows the story of Kristine instead of Zach as it is meant to deal with what caused tension between the two of them. It's chapter system continues from that of The first book.

Returning:

 * Zach Taylor
 * Kristine Cheney
 * Jacob Hope
 * Jasmine Garland
 * Corey Ryan

Not Returning:

 * Anna Barlin
 * The Destroyer

New Characters:

 * The Zirro
 * Sasha White