“Look at the size of these mitts. The scar tissue on the knuckles. Especially here, at the base of each small finger. And do you see this bump?” I let Bömer take a look at a bump that curled all the way around the back of the palm to a point just below the knuckle of the little finger. Then, lowering the left, I lifted the man’s right. “This one’s even more pronounced. This is a common fracture in boxers. I’d say this guy was a southpaw, too, which should help narrow it down a bit. Except that he hadn’t boxed in a while. See the dirt under these fingernails? No boxer would tolerate that. Only the pathologist here didn’t scrape them out, and no detective ought to tolerate that. If the medicine man doesn’t do his job, it’s up to you to put him straight.”

I took out my pocketknife and an Adlon envelope containing Muller’s resignation letter and scraped out what was underneath the dead man’s nails.

“I don’t see what a few crumbs of dirt are going to tell us,” said Bömer.

“Probably nothing. But evidence rarely comes in a large size. And it’s nearly always dirty. Remember that. Now all I need is to see the dead man’s clothes. And I need the use of a microscope for a few minutes.” I glanced around. “As I recall, there’s a laboratory somewhere on this floor.”

He pointed. “In there.”

While Bömer went to fetch the dead man’s clothes, I put the contents of his fingernails into a Petri dish and stared at them for a while underneath a microscope. I was no scientist and no geologist, either, but I knew gold when I saw it. There was just a tiny crumb, but it was enough to catch the light and my attention. And when Bömer came into the lab carrying a cardboard box, I went ahead and told him what I’d found, even though I knew what he was going to say.

“Gold, huh? A jeweler, maybe? That might also be evidence that the man was a Jew.”

“I told you, Richard. This man was a boxer. Most likely he was working on a building site. That would account for the dirt under the nails.”

“And the gold?”

“Generally speaking, outside of a goldsmith’s, the best place to look for gold is in the dirt.”

I opened the cardboard box and found myself looking through the clothes of a workingman. At a pair of strong boots. At a thick leather belt. At a leather cap. The cheap flannel shirt interested me more, as there were no buttons on it, and there were small tears on the material where they should have been.