Murder book : a novel
(Book)

"When a sudden crime wave hits several small midwestern towns, the U.S. Attorney for the region calls on Harry Duncan to investigate. An ex-cop known for his unorthodox methods, Duncan is reluctant to go up against a widespread criminal organization - but the attorney in question is Ellen Leicester, the wife who left him 15 years earlier, and, to her, he can't say no." ...Publisher.

"Initially brought in as a consultant to determine if the racketeering is severe enough to require an all-out investigation by the FBI, Duncan quickly finds himself in conflict with a syndicate far more violent than first suspected. As the investigation develops, he begins compiling a "murder book," the notebook in which a detective keeps records, interviews, photos - everything he needs to build his case. But his scrutiny of the gang soon make Duncan a target. Not even Ellen is safe.",- From back cover.,Publisher.