The novel is set aboard a yacht named the "Elibank," which is anchored off the coast of Maine. The story follows the experiences of a group of people on the yacht, including the yacht's owner, a detective, and other passengers and crew members. The atmosphere on board becomes tense and mysterious as strange events occur, including a murder.The central mystery revolves around the murder of a crew member and the efforts to solve the crime. The novel is characterized by its intriguing and complex plot, as well as its well-drawn characters, each of whom becomes a potential suspect.As the detective works to unravel the mystery, the tension on the yacht escalates, and the passengers and crew members find themselves in a perilous situation. "The After House" is known for its suspenseful narrative and its skillful use of the closed-circle mystery trope, where a group of people is isolated from the outside world and must confront a murderer among them.Mary Roberts Rinehart was a popular author of her time, known for her ability to create suspenseful and engaging mysteries. "The After House" is a fine example of her work in the mystery genre, and it continues to be enjoyed by fans of classic mystery fiction.