nine o'clock
`` That will be on the slope beneath Boconnoc , '' said I. `` How know you that ? '' he asked briskly , and I was telling him that the dispositions of the Royal troops were no secret to the rebels -LRB- warning of all fresh movements being brought daily to the ford from Lostwithiel -RRB- , when a sergeant interrupted and , forbidding any further converse , packed me off homeward , yet not unkindly . For what came of this talk Margery -- to whom I reported it that same evening -- must bear the credit . For two days she brooded over it , keeping silence even beyond her wont , and then on the night of the 30th , at nine o'clock , when I was scarce abed , she tapped at my door and bade me arise and dress myself . She had an expedition to propose , no less than that we should cross the river and pay Mark a visit in his quarters . Her boldness took away my breath : yet as she whispered her plan it did not seem impossible or , bating the chance of being shot by a stray outpost , so very dangerous . A heavy fog lay over the hills , as it had lain for nights .