Poirot smiled slightly.

“I made a call at the Russian Embassy.”

“Oh.”

“I see that that tells you nothing. But I will not be a human oyster. No, I will lay my cards on the table, which is assuredly a thing that oysters do not do. You suspect, do you not, that I am not satisfied with the case against Derek Kettering?”

“That is what I have been wondering. I thought, in Nice, that you had finished with the case.”