The first time Laurie & her dad see the white rider watching them from the deep, cool shadows of the trees, he is alone. Laurie is convinced that his appearance has a meaning, that somehow he is trying to tell them something
- something her dad needs to pay attention to. Is the rider somehow linked to the genetic research into squirrels that Laurie is helping her dad with in the lab?
When a second rider with a bloody sword appears alongside the first, & then a third & a fourth, Laurie knows she must try to understand who they are & what they represent. With the help of her brother & his best friend, she discovers what the riders mean but will it be too late to stop the inevitable chain of events that has been set in motion... ?