Inglethorp shook his head sadly.

"My poor wife," he murmured. "Poor Emily! It is terrible."

"I do not think, monsieur," said Poirot pointedly, "that you
quite realize how terrible it may be--for you." And as Inglethorp
did not appear to understand, he added: "Mr. Inglethorp, you are
standing in very grave danger."

The two detectives fidgeted. I saw the official caution
"Anything you say will be used in evidence against you," actually
hovering on Summerhaye's lips. Poirot went on.

"Do you understand now, monsieur?"

"No; What do you mean?"

"I mean," said Poirot deliberately, "that you are suspected of
poisoning your wife."

A little gasp ran round the circle at this plain speaking.

"Good heavens!" cried Inglethorp, starting up. "What a monstrous
idea! _I_--poison my dearest Emily!"

"I do not think"--Poirot watched him narrowly--"that you quite
realize the unfavourable nature of your evidence at the inquest.
Mr. Inglethorp, knowing what I have now told you, do you still
refuse to say where you were at six o'clock on Monday afternoon?"