Brock Peters (To Kill a Mockingbird) is Stephen Kumalo, a black South African minister searching the unfamiliar back alleys and shantytowns of Johannesburg for his son, Absalom.Brock Peters (To Kill a Mockingbird) is Stephen Kumalo, a black South African minister searching the unfamiliar back alleys and shantytowns of Johannesburg for his son, Absalom.Brock Peters (To Kill a Mockingbird) is Stephen Kumalo, a black South African minister searching the unfamiliar back alleys and shantytowns of Johannesburg for his son, Absalom.