"No, Greig, we're not going on a still hunt for murderous, disembodied shades.

We're going after living people--and we're not going very far.

What puzzles you and the clerks--how anyone managed to get to him and fire the shot--is so simple that I'm surprised you're worrying over it.

I have already solved that." Greig stared at his superior in undisguised amazement.
"Why--er--how was it done ?" he stammered.
In reply, Britz produced the needle which he had found at the feet of the murdered man.
"Examine this and see if it doesn't solve the puzzle," he said.
Greig looked a long while at the long, thin, glistening instrument.
"There's blood half-way down from the point," he commented audibly.

"But I don't see what it explains." "Of itself, it wouldn't mean much," admitted Britz.