The supporting details should be included in the Body Paragraphs of an essay. The introduction is an introduction of what you plan to write about, and the thesis is included in the introduction where you specifically mention your main topics/points. However you elaborate on these in the body paragraphs and these elaborations are your supporting details. The conclusion is a summary of your essay and should not be introducing any new information.
There was a moment near sunset, when katie felt like the old oak, and laying for winter, which had shed its leaves, was the one thing that actually listened
Explanation:
I will go didactic I think that is it