"And every night at midnight, I opened his door... This I did for seven nights."
"I dragged him to the floor and pulled the heavy bed over him... The old man was dead. "
"I told them the old man was away in the country... I was so confident that I brought chairs into the room to sit down."
The rising action consists of events that lead up to the climax. In this case, the narrator watches the old man for seven nights to see his "vulture" eye, which he hates. This leads up to the eight night, when he kills the old man.
The climax is the turning point in the story. This is the point with the greatest suspense or action. The climax in The Tell Tale Heart is when the narrator kills the old man and gets rid of the eye.
The falling action consists of the events or action after the climax. The story winds down from here. The falling action of this story is when the police come into his home, search the place, and ask the narrator questions.