The Adventure of the Speckled Band: Holmes is contacted by a young woman, Helen, who fears her stepfather wishes to kill her. Her sister died two years ago before she could be married. Helen is now about to marry and has been moved into the room her sister died in. Holmes deduces that the women's stepfather sent a venomous snake through an adjoining vent to prevent them from taking the portion of Helen's mother's inheritance that was to be given to the women when they married.

The Adventure of the Three Gables: Holmes has been messaged by an elderly woman who has been offered a large sum for her house on the condition that all of her belongings are also sold. Holmes deduces that the offer comes from someone who wants the woman's late son's possessions. Later, the woman grabs part of a manuscript as it is stolen from her son's trunk. Holmes deduces from the scrap that the son threatened to expose a rich woman's affair and that the woman has been behind the house purchase and the theft.

The Adventure of the Beryl Coronet: Holmes is contacted by a banker who has been entrusted with a beryl coronet as collateral for a loan. The banker found his son trying to bend the broken coronet. Holmes deduces that the coronet was actually broken by the banker's niece and the son's friend who sold the beryls. The son let his father think he had broken the coronet to cover for his cousin (the banker's niece).

The Adventure of the Three Garridebs: Holmes is contacted by a man named Nathan Garrideb who wishes for Holmes' help finding another Garrideb. An American Garrideb has told Nathan that an eccentric millionaire Garrideb has directed his fortune to be divided equally amongst three men with the same last name as he. Holmes deduces that the American Garrideb's story is an elaborate ruse to get Nathan out of his rooms so that he may steal the forging supplies left by the previous tenant.

The Adventure of the Red Circle: Holmes is contacted by a landlady who is worried about a strange tenant who never leaves his room and requests things only by written notes. Holmes deduces that the tenant is not the bearded man who originally rented the room. The tenant is the wife of the bearded man who is being hidden from a dangerous criminal.

The Adventure of the Red Circle: Holmes is contacted by a landlady who is worried about a strange tenant who never leaves his room and requests things only by written notes. Holmes deduces that the tenant is not the bearded man who originally rented the room. The tenant is the wife of the bearded man who is being hidden from a dangerous criminal.

The Adventure of Shoscombe Old Place: Holmes is contacted by a trainer who is concerned about his master's strange behavior. Holmes deduces that the master, along with two servants, has been covering up his sister's death to prevent her fortune from reverting to her late husband's brother until he can win a horse race and pay off his debts.

The Adventure of the Stockbroker's Clerk: Holmes is contacted by a clerk who has been offered a well-paid position on the condition that he not resign from the position he has already accepted at a different company. Holmes deduces that the two men the clerk saw at his job are one and the same, and that the man's accomplice has secretly been posing as the clerk at his prior job in hopes of breaking into the building's safe.