Cargrim would have given much to have overheard this speech, but as the door and several passages were between him and the talker, he was ignorant of the incriminating remarks the bishop had let slip. Still baffled, but still curious, he busied himself with attending to some business of the See which did not require the personal supervision of Dr Pendle, and when that prelate took his departure for London by the three o'clock train, Cargrim attended him to the station, full of meekness and irritating attentions. It was with a feeling of relief that the bishop saw his officious chaplain left behind on the platform. He had a secret, and with the uneasiness of a loaded conscience, fancied that everyone saw that he had something to conceal--particularly Cargrim. In the presence of that good young man, this spiritual lord, high-placed and powerful, felt that he resembled an insect under a microscope, and that Cargrim had his eye to the instrument. Conscience made a coward of the bishop, but in the case of his chaplain his uneasy feelings were in some degree justified. On leaving the railway station, which was on the outskirts of the modern town, Cargrim took his way through the brisk population which thronged the streets, and wondered in what manner he could benefit by the absence of his superior. As he could not learn the truth from Dr Pendle himself, he thought that he might discover it from an investigation of the bishop's desk. For this purpose he returned to the palace forthwith, and on the plea of business, shut himself up in the library. Dr Pendle was a careless man, and never locked up any drawers, even those which contained his private papers. Cargrim, who was too much of a sneak to feel honourable scruples, went through these carefully, but in spite of all his predisposition to malignity was unable to find any grounds for suspecting Dr Pendle to be in any serious trouble. At the end of an hour he found himself as ignorant as ever, and made only one discovery of any note, which was that the bishop had taken his cheque-book with him to London. To many people this would have seemed a natural circumstance, as most men with banking accounts take their cheque-books with them when going on a journey. But Cargrim knew that the bishop usually preferred to fill his pockets with loose cash when absent for a short time, and this deviation from his ordinary habits appeared to be suspicious. 'Hum!' thought the chaplain, rubbing his chin, 'I wonder if that so-called clergyman wanted money. If he had wished for a small sum, the bishop could easily have given it to him out of the cash-box. Going by this reasoning, he must have wanted a lot of money, which argues blackmail. Hum! Has he taken both cheque-books, or only one?'