six o’clock
Remember , this young Mace had never actually spoken to Mr. Inglethorp . How should he doubt that the man in his clothes , with his beard and his glasses , was not Alfred Inglethorp ? '' `` It may be so , '' I said , fascinated by Poirot 's eloquence . `` But , if that was the case , why does he not say where he was at six o'clock on Monday evening ? '' `` Ah , why indeed ? '' said Poirot , calming down . `` If he were arrested , he probably would speak , but I do not want it to come to that .