John D. MacDonald 
End of the Night 

Three men and a beautiful girl on a cross-country terror spree — a coast to coast rampage of stealing, kidnapping, rape and killing.Who were they? Where did they come from? Why did they do it?With chilling detail, John D. Mac Donald unwraps the grotesque inner world of these four young psychopaths, and brings into terrifying focus the random, violent lusts that lie hidden between mischief and madness …