midnight
A natural enough surmise in a very feverish locality . The Lieutenant of the Reserve only pursed up his mouth and raised his eyebrows without looking at him . It might have meant anything , but Davidson dismissed the hospital idea with confidence . However , he had to get hold of Heyst between this and midnight : `` He has been staying here ? '' he asked . `` Yes , he was staying here . '' `` Can you tell me where he is now ? ''