“I have a camera in my bag, as it happens. I’ll go and get it,” Darcy said. I realized he had brought a camera along to record a happier event that was supposed to have taken place. At least now it was going to be useful. As Darcy left the room Lord Kilhenny looked at the two of us. “Are you sure this is a sensible course of action? If this man really has just murdered his employer I certainly don’t want you and Georgiana confronting him. And Darcy and I couldn’t go, because he’d be suspicious and not want to talk to us.”

“We won’t be confronting him,” Zou Zou said. “We’ll be asking for his help. A possible line of inquiry we are following. He doesn’t know me. I can say with complete truth that I’m doing preliminary investigations on behalf of the barrister in Dublin. That is absolutely true and may unnerve him a little. And if he did kill his employer he’ll be secretly laughing at us for barking up the wrong tree, as the English would say. What’s more, we are not stupid. If he says, ‘Come down to the dungeons with me and I’ll look at the photograph,’ we won’t go.” And she gave that delightful tinkling laugh.

Lord Kilhenny got to his feet as Darcy came back, triumphantly waving the camera. “Very well,” he said. “I’m not sure what photographs I have that would fit the bill.”

“You have some newspaper photographs taken at race meetings, don’t you?” Darcy said. “Standing in the winner’s circle. That kind of thing.”

“Yes, but you can’t show him a photograph of me,” Lord Kilhenny said testily.

“One of the other people in the photograph—that’s who they’ll ask about,” Darcy said. “You must have pictures of being presented with a cup, or talking with officials. This Mickey creature won’t know who they are.”

Lord Kilhenny nodded and we heard the heavy tread of his feet going up stairs. We sat looking at each other. “Well done, Zou Zou,” Darcy said. “I don’t think we’d ever have got him to talk without you. Now at least we’re onto something with the doctor.”

“And proof that Mickey lied about one thing,” I said.

We looked up as Lord Kilhenny returned. I noticed that he had combed his hair. “This one might do,” he said and handed Zou Zou a photograph. It was a press picture showing him shaking hands with another man while several others looked on.