“We’re getting some light on the thing, anyway. It’s the diamonds all these people are after. It must have been to obtain possession of the diamonds that the ‘man in the brown suit’ killed Nadina.”

“He didn’t kill her,” I said sharply.

“Of course he killed her. Who else could have done so?”

“I don’t know. But I’m sure he didn’t kill her.”

“He went into that house three minutes after her and came out as white as a sheet.”

“Because he found her dead.”

“But nobody else went in.”

“Then the murderer was in the house already, or else he got in some other way. There’s no need for him to pass the lodge, he could have climbed over the wall.”

Suzanne glanced at me sharply.