"Rising above the city of Collis is the Holy Sanctum. And watching over its many spires is Catrin, an orphan girl whose unique skills serve the Sanctum's master architect - for she alone can spot the building's flaws in construction before they turn deadly. But when Catrin witnesses a murderer escaping the scene of his crime, she's pulled into a dangerous chain of events where the only certainty is that the killer will strike again."--
adolescent
Erin Beaty.
