content: all seemed lost , when a mysterious voice sounded out of the darkness : " if you would gain the castle door , keep to the black stones on the shore . " it was the voice of some poor mortal , who , for some reason or other , had been taken prisoner by the fairies -- who were really very malicious little folk -- and who did not want a like fate to befall the adventurous page - boy ; but the little fellow did not know this . he had once heard that if anyone walked on the wet sands , where the waves had come over them , the fairies could not touch him , and this mysterious sentence brought the saying into his mind .
answer: a voice told him .
question: why did the little page-boy run to the shore ?
target: why did the little page-boy run to the shore ?
references: why did the little page-boy run to the shore ?