“The milk isn’t poisoned today.” Dotty Mrs. Lancaster seems to be rambling again. Or so Tommy and Tuppence Beresford are led to believe on their visit to Sunny Ridge Rest Home. But what are they to make of the old woman’s implication that something is buried behind the fireplace in the sitting room? Or her painting of a secluded house that Tuppence finds strangely familiar? And what are they to do when Mrs. Lancaster disappears without a trace? They’re about to discover that something wicked has come to Sunny Ridge…