"I dare say," observed Summerhaye sarcastically.

Japp was regarding Poirot with comical perplexity.

"Can't you go a little further, Mr. Poirot? A wink's as good as a
nod--from you. You've been on the spot--and the Yard doesn't
want to make any mistakes, you know."

Poirot nodded gravely.

"That is exactly what I thought. Well, I will tell you this.
Use your warrant: Arrest Mr. Inglethorp. But it will bring you
no kudos--the case against him will be dismissed at once! Comme
ca!" And he snapped his fingers expressively.

Japp's face grew grave, though Summerhaye gave an incredulous
snort.

As for me, I was literally dumb with astonishment. I could only
conclude that Poirot was mad.

Japp had taken out a handkerchief, and was gently dabbing his
brow.

"I daren't do it, Mr. Poirot. I'd take your word, but there's
others over me who'll be asking what the devil I mean by it.
Can't you give me a little more to go on?"

Poirot reflected a moment.