Los crímenes del monograma

Londres, 1929. Hércules Poirot está cenando en el café Pleasant cuando una mujer irrumpe en el local y le confía que alguien está a punto de matarla. Le ruega que no investigue, pues con su muerte, dice, se habrá hecho justicia. Unas horas más tarde, tres personas son asesinadas en un elegante hotel londinense. Poirot no puede evitar involucrarse en el caso, pero, mientras él se esfuerza en ordenar todas las piezas, el asesino se prepara para volver a matar. Hercule Poirot's quiet supper in a London coffee house is interrupted when a young woman confides to him that she is about to be murdered. She is terrified, but begs Poirot not to find and punish her killer. Once she is dead, she insists, justice will have been done. Later that night, Poirot learns that three guests at a fashionable London hotel have been murdered, and a cufflink has been placed in each one's mouth. Could there be a connection with the frightened woman? While Poirot struggles to put together the bizarre pieces of the puzzle, the murderer prepares another hotel bedroom for a fourth victim.