In a post-9/11 world, terrorists want Americans to believe that anywhere in the continent can be hit at anytime. The ore docks at Two Harbors, Minnesota, are vulnerable.

Sequel to Convergence at Two Harbors, Seven Graves Two Harbors follows a meth ring infiltrating their charming small town.

When Deidre Johnson fills in for Silver Bay's only police officer for six weeks, she doesn't anticipate facing anything of consequence. She is so wrong. She discovers the frozen body of a Cree Indian girl within the city limits, and in the process of her investigation uncovers a sex-trafficking ring involving native women being transported from Canada and sold in the Duluth Harbor. She is torn between the normalcy she sees around her and the long-kept secret river of young girls that flows through Two Harbors to Duluth.

A young man is found beaten to death, the most sacred areas of a Catholic church are desecrated, a sabotaged railroad track leads to a deadly derailment, and a Jewish holocaust survivor is hung in effigy. All happen in too short a time span to say they are not related, and Deidre Johnson is brought out of retirement to solve the crimes. Suspect groups are identified, and a process of elimination begins, ending in a life-altering experience for her. Preying in Two Harbors is the fourth book of the Two Harbors mystery series written by Dennis Herschbach.