Callen’s Dad has always been secretive of his past but when the family have to move into his childhood home, the last thing Callen expects is a boarded-up mansion covered in gargoyles. It's enormous, the doors are nailed shut, the gardens are overgrown... and long-forgotten magic is returning. When a disgruntled gargoyle wakes up in his presence, Callen must befriend Zariel and earn her trust before it’s too late. A dark threat is growing in the shadows and only a Gargoyle Guardian can stop it.