El truco de los espejos

Ruth van Rydock is very worried about Carrie-Louis, her sister, so she asks her old friend Miss Marple to come to Stonygates, the labyrinthine mansion where she lives with her third husband, Lewis Serrocold, to check that everything is going. well. Upon arrival, Miss Marple finds herself in the middle of an eccentric house, where a strange family and a reformatory for young criminals coexist under the same roof, where the violence hardly seems to be perceived. However, the apparent calm turns into a storm when a crime is committed, and Miss Marple will have to use all of her wits to unmask the murderer and expose her plan.