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In the following passage from "The Tell-Tale Heart," the Edgar Allen Poe uses pacing to create THIS:
When I had waited a long time, very patiently, without hearing him lie down, I resolved to open a little --a very, very little crevice in the lantern. So I opened it --you cannot imagine how stealthily, stealthily --until, at length a simple dim ray, like the thread of the spider, shot from out the crevice and fell full upon the vulture eye.
What is tension/mystery/surprise?