Special Agent Dillon Savich, chief of the FBI’s Criminal Apprehension Unit, and his wife, Sherlock (also an FBI Special Agent), are trying to figure out who’s killing math teachers and why.

They’re sidetracked from this endeavor when Sam, the son of their good friend and ex-FBI agent Miles Kettering, is kidnapped from his home in Colfax, VA. Although he’s only six years old, Sam escapes from his captors and is found by Katie Benedict, the Sheriff of Jessborough, a town in eastern Tennessee. Dillon and Miles fly to Tennessee to get Sam and arrive just as the kidnappers have found Sam again at the Sheriff’s house. After the shootout and explosion, witnessed by both Sam and Katie’s daughter, Keely, the question is: Why were the kidnappers so intent on taking Sam? Who’s behind the scheme? What’s the big ransom?

Leads take the officers to Elsbeth and Sooner McCamy. Elsbeth is the sister of one of the kidnappers and Sooner is the wacko, self-appointed ‘reverend’ of the Sinful Children of God ‘church’. The McCamy’s deny knowing anything about the kidnapping; but the more they deny it, the more suspect they are.

I’ve introduced you to the main characters, so I won’t go any further and spoil it for you. This is fiction, so all the loose ends are neatly tied up in the end. Oh, Dillon did figure out who was killing the math teachers.