

With these riches out of the way, he gains the courage to confess his feelings to her, and discovers that she shares them. He had been hiding his true feelings and trying to deny the spark between him and Mary because he felt that he wasn't good enough for her and that she would frown upon him. Watson is ecstatic when he finds out that the riches are gone.

Here Sherlock tries to solve the disappearance of Mary’s father, uncovering the secrets of the treasure–and the true feelings of Watson for Mary–along the way. Sherlock Holmes and Doctor Watson work tirelessly to solve mysteries, finding the unexpected but logical explanation behind apparently mystic or otherwise baffling events. The Sign of the Four has the motif of investigation, along with the rest of the Sherlock Holmes stories. Drugs thereby symbolize the avoidance from depression and “death." Investigation (Motif) One might think that Sherlock is behaving foolishly, but he is also saving himself from his own mind. He claims, however, that his mind rebels against idleness. Sherlock uses it only in the absence of interesting crimes.

He often uses drugs, but he doesn’t deny that it has fatal consequences. Toby is a symbol of devotedness and faithfulness, and evidence that Holmes needs a team to solve cases. This sensible animal always helps Sherlock to find criminals, and despite of the fact that it isn’t his own dog, this animal nevertheless remains faithful to Sherlock. Besides Doctor Watson, Sherlock Holmes has another helper.
