A blood debt must be paid with blood.... 

This is the message pinned to Will Kane’s door with a Bowie knife. And it doesn’t take long before the first of the Hard Flint Brothers arrives to make good on the threat. 

Kane barely escapes with his life, but things go downhill from there, with five more Brothers having sworn to take his life in vengeance for his killing of one of their own. 

Then there are the women in his life:  

Caitlyn, a mysterious woman who has several identities and knows more about Kane than she should. Who does she work for? What does she really want from him?

Sofia Cappucci, daughter of a mob family boss who has higher aspirations and wants Kane’s help in achieving them, whether he’s willing or not. She has him negotiating with Roy Cohn, infamous criminal lawyer. 

Toni Marcelle, the sister of his West Point room-mate and Ranger Buddy. She has her own set of problems. 

But lurking behind it all, Kane is beginning to feel the presence of something bigger, an organization more secret than the CIA or FBI. One that has ties stretching back to World War II and involves the highest levels of power and seems particularly interested in him. 

Will Kane suffers from undiagnosed Apsergers, a high functioning autistic, like a number of exceptional people, especially in the arts. Except his art is death and he is very, very good at it. 

(The third Will Kane, Green Beret book)