Does "The Tell-Tale Heart" contain any examples of parallel episodes, foreshadowing, or flashback?

The entire story of "The tell tale heart" is a flashback.

Explanation:

The tell tale heart is a story which speaks about the guilty and the innocence. The theme of the story mostly revolves around these two themes only. In the story, the fast beating heart of the narrator is the symbol which reminds the narrator of the guilty and how he was not innocent and the bad deed that he has done in his life.

The entire story is a flashback and contains of events that have happened in the past with the narrator.