ings. I do not care for my friends to carry loaded pistols about with them and never would I permit a mere acquaintance to do so. No, no, mon ami." This to the Italian who swearing hoarsely. Poirot continued to address him in a tone of mild reproof: "See now, what I have done for you. I have saved you from being hanged. And do not think that our beautiful lady will escape. No, no, the house is watched, back and front. Straight into the arms of the police they will go. Is not that a beautiful and consoling thought? Yes, you may leave the room now. But be careful—be very careful. I——— Ah, he is gone! And my friend Hastings looks at me with eyes of reproach. But it was all so simple! It was clear, from the first, that out of several hundred, probably, applicants for No. 4, Montagu Mansions only the Robinsons were considered suitable. Why? What was there that singled them out from the rest—at practically a glance. Their appearance? Possibly, but it was not so unusual. Their name, then!"
"But there's nothing unusual about the name of Robinson," I cried. "It's quite a common name."
"Ah! Sapristi, but exactly! That was the
