Peterson saw a tallish man with a goose fight with roughs, and then he saw a hat and a goose in front of Holmes’ house.
Holmes deduced that the owner of the hat was intellectual and decline of his fortunes from the hat. They found a blue stone in the goose’s crop. It was the Countess of Morcar’s blue carbuncle. Because of it, John Horner was arrested for stealing it.
Henry Baker came to take back his lost things. Then we happened to meet James Ryder, the Head attendant at the Hotel Cosmopolitan. Then he told the whole thing. He stole the blue carbuncle with the countess’ maid. To move the carbuncle to another place, he put it into a goose’s crop. But wrongly, the goose was sold to the dealer.
Helen Stoner’s mother bequeathed her money to Dr. Roylott, Helen’s stepfather with a provision about giving Helen and her twin sister Julia money after they married.
After Mrs. Stoner died, they three lived in the ancestral house. Dr. Roylott had a cheetah and a baboon, and he became a morose and disappointed man so the folks would fly at his approach. And the twins also lived unhappily and hard.
Julia and a major became engaged. Before the wedding, one night, Julia went into Helen’s room and asked whether she heard the whistle. With the negative answer, she went back to her own room, between Dr. Roylott’s room and Helen’s room. Hearing a wild scream of Julia, Helen ran out of her room and she heard the whistle. Julia said “the speckled band” alarmedly and died. It was certain that Julia was quite alone when she met her end and there were no marks of any violence upon her.
Two years later, Helen was going to get married. Dr. Roylott asked her to live in Julia’s room because her room should be renovated. But when she lived in, she also heard the whistle and got frightened, so she turned to Holmes for help.
Dr. Roylott came into Holmes’ house after Helen left. And he admitted that he traced her and wanted to know what she had said. Of course, he went back with no answer.
In the afternoon, we got to Leatherhead to examine the house before Dr. Roylott was back. We found there was a hole, a rope and a fixed bed in Julia’s room.
With Helen’s cooperation, we got into Julia’ s room successfully at night after Dr. Roylott slept. Waiting for a long time, finally, at three, we saw light from the hole and then we heard the whistle. Suddenly, Holmes blew the rope hard and unceasingly. Later, we heard a scream. After it disappeared, we got into Dr. Roylott’s room and found he was dead with a deadly snake on his head.
In fact, Dr. Roylott trained a deadly snake and let it go through the hole and take the rope towards Helen’s bed to kill her. Because of Holmes’ blow, the snake went back and bit its master.