Ghost hunter

The ghost-hunter had a battered buzzing gadget, a metal thing from the seventies with a chunky handle to support the weight of its huge batteries, and a wand on a coiled wire. He said the tricky thing was calibrating it. The dead are everywhere, you see, so it takes just the right level of sensitivity to find the spirit you're looking for against the background haunting. He traced the shape of a frail young body in the air, the piezo howling. What do we do now we've found it? we asked him. He shrugged, and tucked the wand back in its holder. Just sit, and know she's there, he said.