His Last Bow The Adventure of the Devil's Foot & His Last Bow (p1123-1155)

In The Adventure of the Devil's Foot a man named Mr. Mortimer Tregennis and another person named Mr. Roundhay went to Holmes to report that Tregennis' two brother had become insane and his sister had did too. Mortimer had gone to see them, left for a while and came back the next day seeing them in the same spots he left them with his sister dead and the maid fainted on the floor. Mortimer believed that the man he once divided his the profits from the sale of his family business did killed her and made his brothers insane. So, Holmes went the the house and summed up his evidence. Later, the cousin of Tregennises, Dr. Leon Sterndale, visited him and when Holmes saw him leaving, he followed him. The next day, Mortimer had died the same way as his sister. After some evidence collecting, Holmes found out how people died and why people were fainting. The smoke of the lamp in the room is poison. Holmes also found out that Mortimer used the poison on his own brothers and sister. He also found out that Dr. Leon had killed Mortimer because he wanted to marry Tregennises' sister and wasnt able to, and once he found out what had happened, he took revenge.

In His Last Bow, it is the first World War and a German man named Von Bork was an agent leaving England with information gathered over four years. He was with his friend Von Herling and Bork had to wait to leave until he had his last transaction with his Irish-American informant. Later, Herling leaves and Bork packed his safe while another person named Altamont came with a car and showed him a package he had brought. The package was a book called Practical Handbook of Bee Culture. After looking at it for a couple seconds, Altamont put chloroform in his face and made him pass out. Later Bork found out that Altamont was Holmes and that they had caught many spies. At the end of the story, Holmes said that he was retiring his job as a detective.