In the authorised Miss Marple continuation short story The Murdering Sort, Roberts is the butler of the wealthy American tycoon Josiah Westover at his Cape Cod mansion. During the events in the story, Roberts assists Josiah in a scheme of his. He wants to interview various members of his family one at a time. After each interview, Roberts is called to lead the person away to the dining room where they wait, unable to communicate with those still waiting for their turn to be interviewed.