Codes of Betrayal  (English, Paperback, Uhnak Dorothy)

Irish-Italian detective Nick O'Hara, grandson of a Mafia don, knows who is responsible for his son's death, but his hands are tied. Abandoned by his wife, he grows increasingly desperate, going into a tailspin from which he can see only one escape: revenge. As Nick's life goes into freefall, he must choose between duty, family loyalty and his desperate need for justice.