San Giobatta, the locals call this place, as though John the Baptist were a neighborhood boy, poor and charmless but held in great affection. Squatting on a granite platform, the dumpy little church shares its modest courtyard with an equally unimpressive rectory and convent, their builder’s architectural ambition visibly tempered by parsimony. Broad stripes of cheap black sandstone alternate with grudgingly thin layers of white Carrara marble. The zebra effect is regrettable.

Ineffective sandbags surround the church, its southeast corner freshly crumpled and blackened by an Allied incendiary bomb. A mob of pigeons waddle through the rubble, crapping and cooing. “The pope speaks lovely German,” Schramm informs them. “Nuncio to Berlin before he got his silly hat. Perhaps I ought to go to Rome and confess to Papa Pacelli!”

He laughs at his own impertinence, and pays for it with another coughing fit. Eyes watering, hands trembling, he drops onto the basilica staircase and pulls out the battered flask he keeps topped up and nestled near his heart. He takes small sips until brandy calms the need to cough, and the urge to flee.

Prepared now, he stands. Squares his shoulders. Advances resolutely on massive doors peopled with bronzed patriarchs and tarnished virgins. Curses with surprise when they won’t yield to his tug. “I want a pries’!” he yells, rapping on the door, first with his knuckles and then more insistently with the butt of his Luger.

Creaking hinges reveal the existence of a little wooden side door. A middle-aged nun appears, her sleeves shoved into rubber gauntlets, her habit topped by a grimy apron. Frowning at the noise, she is short and shaped like a beer keg. Her starched white wimple presses pudgy cheeks toward a nose that belongs on a propaganda Jew.