Edgewise — Graham Masterton

Lily Blake's first mistake is getting involved with dangerous forces she doesn't understand. But she is desperate. Her children have been taken. The police are no help. And George Iron Walker claims he can summon the Wendigo, a Native American spirit that can hunt anyone...anywhere...forever. She doesn't think he can really do it.

Then the man who took Lily's children is found--ripped to pieces. Lily's second mistake: she tells George Iron Walker that she can't keep her part of the bargain. Now she has become the prey, hunted by a spirit that will never rest until Lily is dead.