海倫·史東納小姐在家中晚上聽到口哨聲，而她的姊姊茱莉亞在家中死前亦曾表

Miss Helen Stoner heard the whistle at night at home, and her sister Julia also said that she heard the whistle before she died at home, and claimed that she saw the variegated band, so Miss Helen was very scared , So I asked Holmes for help. Holmes and Watson went to investigate the place where Miss Helen lived. Holmes found that there were many strange decorations in Miss Helen's place, such as unventilated vents, and the room bell not connected to the servants. He had already reasoned about the incident. Circumstances, so he hid in Miss Helen's room at night and waited for the suspect to appear. Finally, it was discovered that Miss Helen’s stepfather, Dr. James Roylott, had devised a poisonous snake to kill the Helen sisters in order to obtain family property.

Miss Helen Stoner was so frightened that she turned to Holmes for help when she heard a whistle at night at her home and her sister Julia had heard a whistle before she died at home and claimed to have seen the ribbon with flower spots. Holmes, along with Watson, went to where Miss Helen lived to investigate, and Holmes found that there were many strange decorations in the place where Helen lived, such as unventilated vents, not connected to the servant's roombell, etc., and he had reasoned about the circumstances of the incident, so he hid in Miss Helen's room at night and other suspects appeared. It was finally discovered that Miss Helen's stepfather, Dr James Roylott, had designed to kill Helen's sisters with a poisonous snake in order to obtain the property.

Miss helen Stoner heard the whistle at home in the evening. Before her sister Julia died at home, she said she heard the whistle and claimed that she had seen the band with spots. So miss helen was very afraid and asked Sherlock Holmes for help. Sherlock Holmes and Watson went to the place where miss helen lived. Holmes found that there were many strange decorations in the place where miss helen lived, such as ventilation vents without ventilation and the bell not connected to the servant's room. He had already deduced about the situation of the incident. At night, he hid in Miss Helen's room and other suspects appeared. Finally, it was discovered that Dr. James Roylott, the stepfather of miss helen, designed to kill Helen's two sisters with a poisonous snake in order to seek property.<br>