A series of over sixty spectacular fires rips through california’s san joaquin valley, killing four people and devastating the landscape. An extensive investigation by the atf, police and forensic scientists reveals a common pattern among all the blazes, and to their horror, authorities soon realize that a serial arsonist is on the loose. As they painstakingly study the evidence from each crime scene, a single fingerprint leads them to one suspect. He is john leonard orr, a respected arson investigator for the glendale fire department in southern california and one of the worst serial arsonists of the 20th century.