On the night of the seventh moon (Heron books)

Blurb

According to ancient Black Forest legend, on the Night of the Seventh Moon, Loke, the God of Mischief, is at large in the world. It is a night for festivity and joyful celebration. It is a night for singing and dancing. And it is a night for love.

Helena Trant was enchanted by everything she found in the Black Forest -- especially its legends. But then, on the Night of the Seventh Moon, she started to live one of them, and the enchantment turned suddenly into a terrifying nightmare . . .


From the Paperback edition.