His Last Bow by Sir Arthur Conan Doyle

Book Summary:

"His Last Bow" is the title story of a collection that features Sherlock Holmes in several different adventures. The stories in the collection were written in the early 20th century and reflect Holmes’ character in different stages of his life.

The most famous story in the collection is "His Last Bow", which takes place during World War I. In this story, Holmes is now older and retired from his detective work. However, he is called back into service to help with espionage during the war. He cleverly outsmarts a German spy, Von Bork, and helps to prevent a potential disaster for Britain.

The collection also includes other stories featuring Holmes' detective work and his famous methods of deduction. While these tales span different time periods in Holmes' life, they all share his signature intelligence, resourcefulness, and keen observation.