Read it through once

When I had got rid of him, which I thought it well to do without prolonging explanations, my mind was much troubled by these two circumstances taken together. Whereas they were easy of innocent solution apart,—as, for instance, some diner out or diner at home, who had not gone near this watchman’s gate, might have strayed to my staircase and dropped asleep there,—and my nameless visitor might have brought some one with him to show him the way,—still, joined, they had an ugly look to one as prone to distrust and fear as the changes of a few hours had made me.