Detective Comics Vol. 1 Annual 02

"Blood Secrets"

Batman speaks to a stranger about an incident when he was only a teenager. Bruce Wayne had found an aging detective named Harvey Harris and begged him to take Bruce under his wing and teach him how to be a detective. Harvey let Bruce tag along with him, and together they began investigating a string of grisly murders in a town called Huntsville.

Harvey and Bruce discovered that the murders were related to a group of white supremacists that terrorized a nearby shantytown "a quarter of a century back.” The mastermind behind these deaths was the disabled physician Dr. Malcolm Falk. Dr. Falk was the son of the supremacist movement's founder and town elder Richard Hunt. His mother was a black servant named Maybelle. Richard Hunt murdered his mistress to cover up his infidelity and crippled his son. To get revenge upon the surviving members of the supremacist group, Dr. Falk hired a maniac named Ben Carr to slaughter them one by one systematically.