“Ah!” He tried the roll top tentatively. “Locked. But perhaps one of Mrs. Inglethorp’s keys would open it.” He tried several, twisting and turning them with a practiced hand, and finally uttering an ejaculation of satisfaction. “ Voilà! It is not the key, but it will open it at a pinch.” He slid back the roll top, and ran a rapid eye over the neatly filed papers. To my surprise, he did not examine them, merely remarking approvingly as he relocked the desk: “Decidedly, he is a man of method, this Mr. Inglethorp!”

A “man of method” was, in Poirot’s estimation, the highest praise that could be bestowed on any individual.

I felt that my friend was not what he had been as he rambled on disconnectedly: