The Psychical Researcher's Tale - The Sceptical Poltergeist / From "The New Decameron", Volume III.

A seasoned psychical researcher describes investigating a rural family's poltergeist disturbances that escalated from misplaced and disappearing items to more aggressive nocturnal incidents. He records methodical precautions and observations as events include bedclothes being pulled off, heavy furniture shifting, sudden chills, and a wavering, mistlike presence that coalesces into a small, goblin‑like figure. The household grows to suspect that an unknowing member of the staff is mediating the disturbances, prompting practical attempts at containment and sympathetic frustration. The account presents detailed sensory notes and procedural steps while the investigator grapples with doubt and the challenge of explaining the plainly observed anomalies.