Sons of Entropy

Out of the Madhouse was the third book of The Gatekeeper trilogy written by Christopher Golden and Nancy Holder based on Buffy the Vampire Slayer.

Appearances

 * Buffy Summers
 * Xander Harris
 * Willow Rosenberg
 * Rupert Giles
 * Angel
 * Daniel Osbourne
 * Cordelia Chase
 * Amy Madison
 * Joyce Summers
 * Ethan Rayne
 * Jacques Regnier
 * Jean-Marc Regnier
 * Antoinette Regnier (Gatekeeper family)
 * Micaela Tomasi (ex-Sons of Entropy)
 * Il Maestro (Sons leader)
 * Brother Claude
 * Brother Lupo (Sons of Entropy)
 * Belphegor (demon)
 * Hadrius (Fulcanelli's teacher)

Behind the Scenes

 * Tagline: "The final battle has begun".