Brendon enjoyed the interest he awakened among other fishermen and, though he always went upon his expeditions alone, usually joined the throng in the smoking-room after dinner. Being a good talker he never failed of an audience there. But better still he liked an hour sometimes with the prison warders. For the convict prison that dominated that grey smudge in the heart of the moors known as Princetown held many interesting and famous criminals, more than one of whom had been "put through" by him, and had to thank Brendon's personal industry and daring for penal servitude. Upon the prison staff were not a few men of intelligence and wide experience who could tell the detective much germane to his work. The psychology of crime never paled in its intense attraction for Brendon and many a strange incident, or obscure convict speech, related without comment to him by those who had witnessed, or heard them, was capable of explanation in the visitor's mind. He had found an unknown spot where some good trout dwelt and on an evening in mid-June he set forth to tempt them. He had discovered certain deep pools in a disused quarry fed by a streamlet, that harboured a fish or two heavier than most of those surrendered daily by the Dart and Meavy, the Blackabrook and the Walkham. Foggintor Quarry, wherein lay these preserves, might be approached in two ways. Originally broken into the granite bosom of the moor for stone to build the bygone war prison of Princetown, a road still extended to the deserted spot and joined the main throughfare half a mile distant. A house or two--dwellings used by old-time quarrymen--stood upon this grass-grown track; but the huge pit was long ago deserted. Nature had made it beautiful, although the wonderful place was seldom appreciated now and only wild creatures dwelt therein. Brendon, however, came hither by a direct path over the moors. Leaving Princetown railway station upon his left hand he set his face west where the waste heaved out before him dark against a blaze of light from the sky. The sun was setting and a great glory of gold, fretted with lilac and crimson, burned over the distant earth, while here and there the light caught crystals of quartz in the granite boulders and flashed up from the evening sobriety of the heath.