midnight
Perhaps the trap-door had n't been tightly fastened down . It was a chance , of course . `` We 'll try the trap-door end first , lad , '' said Cleek . `` If that does n't work we 'll have a go at the other , but somehow you must get to the docks by midnight . You may learn the whole secret there , and it would be the worst luck in the world if you missed the chance ; you must n't . Come on . '' `` I seconds that motion , '' threw in Dollops , though in a somewhat forlorn voice .