Six o'clock
What 's yer name ? '' Hippy told her , adding that he had been a flying ace in the world war , which announcement he made pompously . `` Glad to meet ye , Lieutenant ; but look smart that ye do n't try any of yer flytricks on Joe Shafto . Six o'clock , folks . Remember ! '' was Joe 's parting word as she strode swiftly from their camp , screwing up her face into a long-drawn wink as she passed Grace Harlowe . In that wink Grace read what she had been searching for .