carelessly down on the table, and assumed an attitude that I knew only too well. I saw that he was prepared to hold forth at some length.
“See you, Hastings, we have to contend against four adversaries that is against four different personalities. With Number One we have never come into personal contact—we know him, as it were, only by the impress of his mind—and in passing, Hastings, I will tell you that I begin to understand that mind very well—a mind most subtle and Oriental—every scheme and plot that we have encountered have emanated from the brain of Li Chang Yen. Number Two and Number Three are so powerful, so high up, that they are for the present immune from our attacks. Nevertheless what is their safeguard is, by a perverse chance, our safeguard also. They are so much in the limelight that their movements must be carefully ordered. And so we come to the last member of the gang—we come to the man known as Number Four.”
Poirot’s voice altered a little, as it always did when speaking of this particular individual.
“Number Two and Number Three are able to succeed, to go on their way unscathed, owing to their notoriety and their assured position. Number Four succeeds for the opposite reason—he succeeds by the way of obscurity. Who is
