Book 1

Army of Fire

by Jennifer L. Kelly

Published 18 August 2016

Book 2

The Earth Key

by Jennifer L. Kelly

Published 25 November 2016

Book 3

Genesis of Wood

by Jennifer L. Kelly

Published 12 February 2017

Book 4

The Water Queen

by Jennifer L. Kelly

Published 25 May 2017

Book 5

Secret of Metal

by Jennifer L. Kelly

Published 31 August 2017