I parked the car in front of a four-story apartment building that was as big as a city block. The smooth, modern façade was very slightly curved and pockmarked with different-sized, recessed windows, none of which was on the same level. It looked like a face recovering from a dose of smallpox. There were hundreds, perhaps thousands of these Weimar-built homes in Berlin, and they were about as distinguished as packets of Persil. And yet, although they despised modernism, the Nazis had more in common with its mostly Jewish architects than they might have thought. Nazism and modernism were both products of the inhuman, and when I looked at one of those neat, standardized gray concrete buildings, it wasn’t hard to imagine a neat, standardized detachment of gray storm troopers living in one, like so many rats in a box.

It wasn’t like that inside, however—at least not inside Stefan Blitz’s apartment. In contrast to the carefully planned modernism of the exterior, his furniture was old mahogany, tattered upholstery, chipped Wilhelmine ornaments, table oilcloths, and Eiffel Towers of books, with all of the shelves given over to slices of rock.

Blitz himself was as tattered as his upholstery and, like any other Jew who was forbidden his way of making a living, he was as thin as a maquette in an artist’s garret and hardly living at all. A hospitable, kind, and generous man, he displayed character traits that made him the very opposite of the grasping bogeyman Jew so often caricatured in the Nazi press. Nevertheless, that was what he looked like: a lecher in the stews of Damascus. He offered us tea, coffee, Coca-Cola, alcohol, something to eat, a more comfortable chair, chocolates, and his last cigarettes before finally, having refused them all, we were able to come to the point of our visit.

“Is it possible that a man could drown in seawater in the center of Berlin?” I asked.

“I assume you’ve discounted the possibility of a swimming pool, otherwise you wouldn’t be here. The Admiral’s Garden baths on Alexanderplatz is a brine bath. I used to swim there myself before they stopped Jews from going there.”

“The victim is Jewish,” I said. “And so, for that reason, yes, you’re right, I think I have discounted that possibility.”

“Why, if you don’t mind my asking, is a Gentile bothering to investigate the death of a Jew in the new Germany?”

“It’s my idea,” Noreen said, and told Blitz about the Olympiad and the failed U.S. boycott and the newspaper she hoped would put that to rights, and how she herself was a Jew.