The story of the novel takes place between 1887 and 1888. It tells the story that mary morstan, a British lady, received an anonymous parcel every year after her father disappeared, which originally involved a conspiracy.

Without knowing it, Holmes knew from observation and reasoning that Watson had been to the post office in the morning and sent a telegram. Judging from the present situation of a watch given to him by Watson, this watch was originally his brother's, and his personality, life track and ending are all clear.

The formal story begins with a visit by Miss Mostein. Her strange experiences and strange invitations naturally aroused Holmes' great interest. With their agreement, the story unfolds gradually, one mystery is solved one by one, and new mysteries appear constantly.

Here, Holmes' intelligence and wisdom are fully displayed, but there are also setbacks and failures. Finally, the arrested murderer told the background and ins and outs of the case.

Extended data:

This novel objectively reflects the colonial plunder of India. The Four Signs objectively criticizes the evil greed in human nature through a group of people chasing an Indian native, Wang Baozang. The author arranged for all those who tried to possess these wealth to die or be arrested. Finally, wealth is scattered in the Thames and cannot be found, which shows that greed for ill-gotten wealth will bring them misfortune.

At the same time, the novel compares the poor people who died for money with the pure love between Watson and Miss Morstan and their ultimate happiness. Of course, outside the main line, the author continues to ridicule the incompetence and arrogance of the official police in his usual way.

Baidu Encyclopedia-Four Signs