Sherlock Holmes His Last Bow: The Adventure of the Red Circle & The Adventure of the Bruce-Partington Plans (p.1059-1096)

In The Adventure of the Red Circle, a woman named Mrs. Warren went to Holmes with some questions about her lodger. He offered double her usual so she wouldn't ask questions and have his own rules. On the first night, he went home at 12 and they haven't seen him since. From the cigarette and matches Mrs. Warren brought Holmes, he found out that the lodger eats very little and doesn't receive messages or visitors. When Mrs. Warren ended up leaving, Holmes also said that this man does not want anyone to see him. He also believed that messages were being sent to the man through the paper and found where. After some time, Holmes had enough information to go the Mrs. Warren but before he did, she ended up going to his apartment saying that her husband was kidnapped and taken to Hampstead Heath and thrown on the road without knowing who did it. Holmes' explanation was that they confused her husband with the lodger but they found out soon. When Holmes does go to Mrs. Warren's house, he found that the lodger's house window was pointing at Howe Street. When Mrs Warren was getting the lodger lunch, Holmes then found out that it was a woman. Holmes also found that her and her lover were hiding from danger and looking for help because it was life or death. Later, Holmes and Watson were looking at signals the lodger was making with a lantern behind the window that said beware and danger. When they found that the signal was stopped, they ran to the house and found that Inspector Gregson and a US detective were there. They were there to get a killer whom was inside of the building. So, they went into the house and found the man killed in a fight. The woman was named Emilia Lucca and the killer was her husband. She was happy that he had died.

In The Adventure of the Bruce-Partington Plans, Holmes' brother Mycroft showed up again and came to talk about missing submarine plans. Seven out of the ten pages were found with Arthur Cadogan but three were still missing. When the seven pages were found, Arthur was dead at underground tracks with his head crushed. When Holmes observed the tracks, he found out that Arthur was killed somewhere else. Later, he went to the man who was supposed to be in charge of the papers, Sir James Walter except found out that he had died too. His fiancee said that he was worried about something for the past week and was worried the secret would get out. Later, Holmes went to the office and Sidney said that he put the papers away himself in a safe. On his way back home, Holmes found another person named Hugo Oberstein because he left town when Arthur died. So, Holmes and Watson went to his house and found blood stains and smudged grime on the windows. Then they tried to get the thief to come, so they posted a code in the paper that he uses and he did end up coming. Colonel Valentine showed up and confessed to the plans but said that Oberstein killed Arthur.