What is the falling action in the story "The Tell-tale Heart"?

"The Tell-Tale Heart" is an unusual story because it ends
at the climax; it has no falling action. Edgar Allan Poe wanted to create the most
memorable effect on the reader that he possibly could, so he ends the story at the
climax, the moment of highest action in the story. He does not include any fallen action
because falling action might soften the effect of the story. 
Poe sought to
create a memorable impression, and ending a story at the climax is like ending with an
exclamation point; ending with a falling action is like ending with a period. Unlike
stories that contain a section of falling action, this story provides no answers to the
reader's questions. The story leaves the reader wondering.