All in the Family S02E16 - Archie and the FBI

A man shows up at the Bunker's door claiming to be a government agent and begins asking questions about Larry Grundy, a neighbor of the Bunkers. Archie soon becomes paranoid when he receives a phone call from a neighbor saying that Archie too is being investigated. As paranoia overwhelms him, Archie becomes convinced that he's being watched that perhaps the house is bugged.