Book 1

Undine

by Penni Russon

Published 1 March 2005
Sixteen-year-old Undine, hearing her presumably deceased father calling to her and feeling a strange force growing inside her, travels to the sea to discover the depths of her magical powers.

Book 2

Breathe

by Penni Russon

Published 30 January 2007

Book 3

Drift

by Penni Russon

Published 2 April 2007