“Yes, and Spam. I haven’t been able to look at a tin since.”

He went over to them, pretending to look at the display. “What’s that?” he asked, pointing at a loaf of moldy-looking gray bread.

“Lord Woolton’s National Wheatmeal Bread,” Camberley said, making a face. “It tasted of ashes. It’s my personal opinion that Hitler was behind the recipe.”

“Can I quote you on that?” he asked, pulling out his notebook. He introduced himself, then asked them their impressions of the exhibit and what they’d done in the war.

“I drove an ambulance,” Camberley said.

It was difficult to imagine her being tall enough to see over the steering wheel. “In the Blitz?” he asked.

“No, during the V-rocket attacks. I was stationed at Dulwich.”

Dulwich. That was near Croydon, which meant she might have known Polly, but that was no help. He needed someone who’d known her later, or rather, earlier, after she went to the Blitz. “Did you drive an ambulance as well?” he asked Herbaceous Border, whose name tag read “Margaret Fortis.”

“No, nothing so glamorous, I’m afraid. I spent the Blitz cutting sandwiches and pouring tea. I worked in a WVS canteen in one of the Underground shelters,” she explained. “They’re supposed to have a replica here.” She looked vaguely about.

“Which station?” he asked, trying not to sound too eager. If it was the one Polly had used as a shelter, there was a chance she might have known her.

“Marble Arch,” she said.

Marble Arch had been hit, so that didn’t help.

“You’re interested in the Blitz?” Camberley asked.

“Yes, my grandmother was in London during the Blitz.” Forgive me, Polly, he thought. “And I was hoping to find someone who knew her.”

“What did she do?”

“I don’t know. She died before I was born. I know she worked at Townsend Brothers during the first part of the Blitz and then did some sort of war work, and an uncle of mine said he thought she might have driven an ambulance.”

“Oh, then Talbot might know her.”

“Talbot?”

“Yes. Talbot—I mean, Mrs. Vernon. During the war we got in the habit of calling one another by our last names, and we still do it, even though most of us have married and those aren’t our names any longer. Mrs. Vernon was at Dulwich with me. She drove an ambulance in the East End during the Blitz.”

If Polly’d known Mrs. Vernon, or rather, Talbot, during the rocket attacks, she’d have taken care to keep out of her way during the Blitz, but he went with Camberley to find her in case she knew of other ambulance drivers he could contact.

Talbot, a formidable woman three times Camberley’s size, was listening to a BBC recording with headphones on. Camberley had to tap her on the back to get her to turn around. “This is Mr. Knight. He’s looking for someone who knew his grandmother. She was an ambulance driver.”

“What was her name?” Talbot asked.