Grey Flynn has dedicated her life to her mage, Kier.

She will be his blade on the battlefield, his healer and protector. The deep well of raw power inside her is Kier's to use. Grey would do anything for Kier - be anything for him - if he would only ask.
When a quest to protect the child of an enemy kingdom pulls them into the dangerous heart of their nation's war, Grey and Kier will need to decide what they are willing to sacrifice to protect their secret.

For Grey is no ordinary magical well, but heir to the lost island of Locke - the root of all power. If she dies, all magic dies with her.