Wellspring of Time — Elizabeth Klein

Dark forces released in the form of shape shifters threaten brothers Dougray and Robbie and their companion Belle when they embark on another perilous journey, this time to the Dead City. Here they are faced with the most fearsome trial of all when Dougray, poisoned by a rogue spell, attempts to kill them. After a deadly sword fight, Robbie flees the city with Belle, believing Dougray has perished in the catacombs, along with his father.