ten o'clock
As soon as I leave the yacht , I want you to start her down the river . That is to get the gentleman and the yacht out of the way . Go straight ahead for two or three hours and then come back . Make your calculations so that you 'll get back here at -- say ten o'clock to-night -- here , mind you , not the old anchorage . I 'll be ready to come aboard by that time . Have two men guard that stateroom constantly every minute . Give the gentleman every possible attention , but do n't let him make any noise , and do n't let him get out .