An introduction often ends on the thesis statement.
Explanation: This classical composition is reflecting the high tension of the play.
The title of the composition refers to a spider whose poison is known to make living creatures dance madly.
In a very short essay (less than 1000 words), for example, there is not much room to give a full and detailed context or structure. Essays are usually written for an intelligent but uninformed audience, so begin with some context: the background of the topic, the topic scope, and any essential definitions.
The most important part of the introduction is the response to the question: the thesis statement.