Andrew Crocker-Harris has been forced from his position as the classics master at an English public school due to poor health. As he winds up his final term, he discovers not only that his wife, Millie, has been unfaithful to him with one of his fellow schoolmasters, but that the school's students and faculty have long disdained him. However, an unexpected act of kindness causes Crocker-Harris to re-evaluate his life's work.
Algernon Moncrieff is surprised to discover that his affluent friend -- whom he knows as "Ernest" -- is actually named Jack Worthing. Jack fabricated his alter ego in order to escape his country estate where he takes care of his charge, Cecily Cardew. Cecily believes that Ernest is Jack's wayward brother and is keen on his raffish lifestyle. Algernon, seeing an opportunity, assumes Ernest's identity and sneaks off to woo Cecily.
Agnes "Astra" Huston, a fortune teller at a run-down fair, is found strangled in her bedroom. As the police question five suspects, their interactions with her are shown in flashbacks from their point of view.
