Brimstone

At the age of 14, Jenny Swift is apprenticed to the greatest alchemist of the age and finds herself in a world that is both fascinating and terrifying. As an outsider, and the first female to be given this role, she faces hostility and suspicion. Worse still, she unwittingly becomes drawn into a plot that threatens to throw the world into chaos. Battling against powerful enemies, she overcomes her fears, letting her instincts guide her to find her true talents, which could make her the greatest alchemist of any age.

Brimstone is the first book in the new Earth, Air, Fire and Water series.