Knock three times / Cowell, Cressida

"Xar and Wish are heroes with a huge task ahead--confronting the Nuckalavee is not for the faint hearted. But with Magic and Iron together, they might just have a chance of saving their beloved homes from those who seek to destroy everything they hold dear"--Provided by publisher.

Xar and Wish are both heroes with a huge task ahead: They must find the ingredients for a spell to get rid of Witches once and for all, before the Kingwitch gets his talons on the Magic-that-works-on-iron and destroys everything Xar and Wish hold dear.