The Nameless Detective is the protagonist in a long-running mystery series by Bill Pronzini set in the San Francisco area.
An Italian American (Quarry, 1992), he was raised by a devoutly Roman Catholic mother, and an abusive alcoholic father, as described in Demons (1993).
Nameless served in U.S. military intelligence during the Vietnam War era, and then became a police officer before working as a private investigator.
[2] Two of the novels have been co-written with other authors: Twospot with Colin Wilcox, and Double with Marcia Muller, Pronzini's wife.
Each book paired Nameless with one of the other writer's own respective sleuths: Wilcox's Frank Hastings, and Muller's Sharon McCone.