midnight
Now there came a day on which she said to him : `` I have received a message from the Fairy Bérylune telling me that the Blue Bird is probably hidden in the graveyard ... . It appears that one of the Dead in the graveyard is keeping him in his tomb ... '' `` What shall we do ? '' asked Tyltyl . `` It is very simple : at midnight you will turn the diamond and you shall see the Dead come out of the ground . '' At these words , Milk , Water , Bread and Sugar began to yell and scream and chatter their teeth . `` Do n't mind them , '' said Light to Tyltyl , in a whisper . `` They are afraid of the Dead . ''