" Carl Nelson was a Armed Forces Network announcer who visited the Frankenstein castle near Darmstadt, Germany on Halloween night in 1952.
He was already apprehensive as he probed into the crypt under the dark castle, reporting all the while. He knocked something over, and the resulting crash rattled him. He was calming himself when he spotted a grotesque statue in the fading beam of his penlight. He thought he saw it move slightly. Fearful but still reporting, he forced himself to go up and touch it. He discovered that it wasn't made of solid material as he had supposed...and it moved again.
Nelson lost it. Pleading for help and pounding on the locked door, he fainted.
It was an elaborate prank that almost backfired."