ADT conducts an investigation and identifies the culprit to be Walter
Walter and his friends, receiving a tip about hired detectives asking about him, blockade the ADT detective's car in and either kill him or make him understand he didn't find Walter
The neighbors, who can't afford ADT and all at least know one person who was railroaded by bullshit made up claims by ADT hack detectives, didn't see shit.
Walter kills Marie, dumping her in a ditch. Nobody ever calls it in. People find her body but nobody can afford to hire the private medical examiners, so they leave her to rot.
Walter kills Marie, dumping her in a ditch. Nobody ever calls it in. People find her body but nobody can afford to hire the private medical examiners, so they leave her to rot.