Martina Mackenzie: The Isle of Bala Zopyre

A cursed dagger. A shipwrecked crew. A mysterious, glowing island. Shards of the tale appear in an ancient book under the name of a famous Rhihalven storyteller, and Martina, Heath, and London take it as a call to return to Sheardland.
Soon, these covert ambassadors from the human race discover something new. The blade is shrouded in enchantment—and imbibed with a curse. Someday it will destroy something essential to Sheardland’s existence, deep within the Earth.
The blade's power is coveted by many. But just who in Sheardland knows about the blade and what it was created to do?
Martina and her friends vow to find the dagger and destroy it. Their search brings them to the Isle of Bala Zopyre, the mysterious glowing island. The dagger itself, now so close to fulfilling its purpose, grows in strength, becoming dangerous for any to touch. And the ancient, omniscient sage Amara’s life seems mysteriously intertwined with that of the blade. But, is she still a friend to the three adventurers, or has she taken a different side in the fight to protect Sheardland?
With so much at stake, the trio must outwit the magic folk and prevent the dagger from destroying both worlds.