Radler and Stone built shoddy buildings that tended to fall over on people. During a confrontation with the Flame a building karmically falls on him, ending his scheme.
References: [The Flame #1] [1940] [corrupt building contractor whose buildings collapse; foiled and crushed in a building collapse caused by the Flame; “It’s just as I said, Stone, the cops can’t touch us. We’ve outsmarted them!”; ]