Jeffery Deaver 
Maiden’s Grave [EPUB ebook] 

The countdown begins at noon . . . A school bus stops at a car crash on an isolated road. The two teachers and their deaf students are immediately captured by three escaped convicts. Stark against the prairie stands an ancient slaughterhouse that still reeks of decades of spilled blood. It is here that the killers will bring their hostages.It is here that they will kill one innocent girl an hour, on the hour, until their demands are met