two in the morning
Then he glanced down at the document again . `` James Bisset gets a legacy of three hundred pounds . There are a few smaller legacies to servants , but the only two that might have affected this case do not actually do so . One is John Robertson , Sir Reginald 's chauffeur , but on the night of the crime he was away from home and an alibi can be established till two in the morning . The other is Donald Mackay , the gardener , but he is an old man and was in bed with rheumatism that night . '' `` I see , '' observed Ned , `` you are giving everybody mentioned in the will credit for perhaps having committed the murder , supposing it was physically possible ? '' `` I am answering the question -- who that could conceivably have committed it , had a motive for doing so ?