This phrase functions as a query, seeking to uncover the perpetrator in a fictional work titled “The Perfect Marriage.” It embodies a core mystery central to the narrative, suggesting themes of deception, betrayal, and hidden motives within a seemingly idyllic relationship. An analogous example would be asking “Who shot Mr. Burns?” in a popular television series, driving audience engagement and speculation.
Understanding the question’s significance unlocks the narrative’s driving force. It motivates readers to analyze character relationships, interpret clues, and formulate theories. This active participation enhances the reading experience, transforming a passive reception of the story into an intellectual puzzle. Historically, such narrative hooks have been essential in captivating audiences, propelling the popularity of mystery and thriller genres across various media.