The Stockbroker's Clerk (Easy Classics)

The story's title character is a young man named Hall Pycroft. Shortly before Hall Pycroft is due to start work for a prestigious London firm, a man named Arthur Pinner offers him a better paid position in another city. Hall Pycroft agrees to go to Birmingham to work for Arthur Pinner's brother Henry. When Hall Pycroft discovers that Arthur and Henry Pinner are the same person, he seeks help from the brilliant detective Sherlock Holmes.