Brimstone (1998)

A damned soul is offing people who have gotten away with their crimes,or who he thinks has gotten away from there crimes. He electrocutes them, and leaves nothing left of the victims.At first it looks like the culprit is Lambert, but it is soon discovered Willy the Janitor is the vigilantee. In the end,Stone ultimately sends Willy a one-way trip back to Hell.