midnight
The old Grandmother was triumphant , and tried not to seem surprised . The Tailor made no such vain effort , and remained till bed-time in a state of fresh and unconcealed amazement . `` I 've often heard of the Good People , '' he broke out towards the end of the evening . `` And I 've heard folk say they 've known those that have seen them capering round the grey rocks on the moor at midnight : but this is wonderful ! To come and do the work for a pan of cold water ! Who could have believed it ? '' `` You might have believed it if you 'd believed me , son Thomas , '' said the old lady tossily .