Books with title The 5th Horseman

At the age of six Randall Byrne could name and bound every state in the Union and give the date of its admission; at nine he was conversant with Homeric Greek and Caesar; at twelve he read Aristophanes with perfect understanding of the allusions of the day and divided his leisure between Ovid and Horace; at fifteen, wearied by the simplicity of Old English and Thirteenth Century Italian, he dipped into the history of Philosophy and passed from that, naturally, into calculus and the higher mathematics; at eighteen he took an A. B. from Harvard and while idling away a pleasant summer with Hebrew and Sanscrit he delved lightly into biology and its kindred sciences, having reached the conclusion that Truth is greater than Goodness or Beauty, because it comprises both, and the whole is greater than any of its parts; at twenty-one he pocketed his Ph. D. and was touched with the fever of his first practical enthusiasm - surgery.

The first time Laurie and 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, and then a third and a fourth, Laurie knows she must try to understand who they are and what they represent. With the help of her brother and 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...?