Jack Ferguson

Jack Ferguson is the main antagonist of the Sherlock Holmes story "The Adventure of the Sussex Vampire"

History
Jack is the son of a Mr Robert Ferguson. When he was a boy an accident left him permantly injured, meaning while he can walk, he is partially crippled. At fifteen yeears old, his father remaired after his mothers death, to a peruvian woman and has since had another child.

Consumed with envy towards his younger half brother, and the attention his father gave him, Jack attempted to murder him using a south American poisoned blow pipe, which belonged to his stepmother. His stepmother catching him, beat the boy and managd to suck the posion out of her infants neck.

However she was caught doing this, she could not bring herself to tell her husband what his son had done, and instead retired to her room where she hid, she also soon became ill from the poision she had injested. As such Robert Ferguson went to visit Sherlock Holmes. Holmes quickly realised what was going on, and by secretly watching Jack's actions arround his brother realised what must have happened.

As such he broke the news to Mr Ferguson, over come with grief at the discovery, he was left to deal with it himself, while Holmes recomended sending the boy away for a year at sea, to straighten out his conflicted and envious mind.