Right at the end sat the man called Saturday, the simplest and the most baffling of all. He was a short, square man with a dark, square face clean-shaven, a medical practitioner going by the name of Bull. He had that combination of savoir-faire with a sort of well-groomed coarseness which is not uncommon in young doctors. He carried his fine clothes with confidence rather than ease, and he mostly wore a set smile. There was nothing whatever odd about him, except that he wore a pair of dark, almost opaque spectacles. It may have been merely a crescendo of nervous fancy that had gone before, but those black discs were dreadful to Syme; they reminded him of half-remembered ugly tales, of some story about pennies being put on the eyes of the dead. Syme’s eye always caught the black glasses and the blind grin. Had the dying Professor worn them, or even the pale Secretary, they would have been appropriate. But on the younger and grosser man they seemed only an enigma. They took away the key of the face. You could not tell what his smile or his gravity meant. Partly from this, and partly because he had a vulgar virility wanting in most of the others it seemed to Syme that he might be the wickedest of all those wicked men. Syme even had the thought that his eyes might be covered up because they were too frightful to see.