My job was one that had brought me into contact with a fair number of people who had died from, a fair assortment of unnatural causes, but this was the first time I'd ever seen a man who had been killed by a chisel. A half-inch wood chisel, apparently quite ordinary in every respect except that its wooden handle had been sheathed by a bicycle's rubber hand-grip, the kind that doesn't show fingerprints. The blade was imbedded to a depth of at least four inches and even allowing for an edge honed to a razor sharpness it had taken a man as powerful as he was violent to strike that blow. I tried to jerk the chisel free, but it wouldn't come. It often happens that way with a knife; bone or cartilage that has been pierced by a sharp instrument locks solid over the steel when an attempt is made to withdraw it. I didn't try again. The chances were that the killer himself had tried to move it and failed. He wouldn't have wanted to abandon a handy little sticker like that if he could help it. Maybe someone had interrupted him. Or maybe he had a large supply of half-inch wood chisels and could afford to leave the odd one lying around carelessly in someone's back.

Anyway, I didn't really want it. I had my own. Not a chisel but a knife. I eased it out of the plastic sheath that had been sewn into the inner lining of my coat, just behind the neck. It didn't look so much, a four-inch handle and a little double-edged three-inch blade. But that little blade could slice through a two-inch manila with one gentle stroke and the point was the point of a lancet. I looked at it and looked at the inner door behind die radio table, the one that led to the radio-operator's sleeping cabin, then I slid a little fountain-pen torch from my breast pocket, crossed to the outer door, switched off the overhead lamp, did the same for the table lamp and stood there waiting.