Benny Johannsen had kept the books for the Imperioli syndicate for years. However in the end he stole money from the syndicate and skipped town. As blackmail he made a microtape of the book entries and hid it in his daughter’s teddy bear.
Although Johannsen’s status is unknown his daughter was captured by the syndicate and presumably held for ransom in exchange for the tape. Batman and Batgirl infiltrated the hideout, an abandoned rail yard, and rescued the girl despite encountering metahuman resistance.
Batman obtained the microtape and presumably used the information for his own ends.