Once a celebrated novelist, Mr. M's glory days recede into the past along with his bestseller about a teacher's unsolved disappearance after an illicit affair. As his career wanes, an unnervingly observant neighbor scrutinizes him and his wife, intertwining their lives in secrecy and suspicion. The neighbor, whose life uncannily mirrors the one in Mr. M's novel, initiates a chilling game that blurs the lines between fiction and reality. As the narrative unfolds through multiple perspectives, no one is above doubt, and the story careens towards an unforeseen conclusion that questions truth and consequence.