Detective Comics #9

Speed notices how many hobos and derelicts are on the street. He trails one named Gloomy Jake, and sees him get into a car belonging to racketeer Mike Molona. Disguised as a delivery man he knocks at Molona's door, is recognized by the goon who answers, and knocks him out. Putting on a butler's outfit he hides under the table, where he overhears Jake trying to sell missing tax reports to Molona and the Mayor. Speed confronts them, but is shot, The police break in, and Jake is revealed to be an undercover police investigator.