Madden shot Henshaw, a non-gang member, in the face; as he was dying, Henshaw named Madden as his killer. Despite the police having his name and eyewitnesses to the crime, Madden never went to trial—witnesses in both killings were intimidated, and disappeared.
In 1915, he eventually went to prison for ordering the killing of William "Little Patsy Doyle" Moore, who had been waging a three-year vendetta campaign against Madden and the Gopher Gang.