'It's no use watching to-night,' Dicky said; 'if it's only burglars they won't come again. But there are other things besides burglars that are discovered in empty houses where lights are seen moving.'
'You mean coiners,' said Oswald at once. 'I wonder what the reward is for setting the police on their track?'
Dicky thought it ought to be something fat, because coiners are always a desperate gang; and the machinery they make the coins with is so heavy and handy for knocking down detectives.
Then it was tea-time, and we went in; and Dora and H. O. had clubbed their money together and bought a melon; quite a big one, and only a little bit squashy at one end. It was very good, and then we washed the seeds and made things with them and with pins and cotton. And nobody said any more about watching the house next door.
Only when we went to bed Dicky took off his coat and waistcoat, but he stopped at his braces, and said -'What about the coiners?'
Oswald had taken off his collar and tie, and he was just going to say the same, so he said, 'Of course I meant to watch, only my collar's rather tight, so I thought I'd take it off first.'
Dicky said he did not think the girls ought to be in it, because there might be danger, but Oswald reminded him that they had promised Alice, and that a promise is a sacred thing, even when you'd much rather not. So Oswald got Alice alone under pretence of showing her a caterpillar - Dora does not like them, and she screamed and ran away when Oswald offered to show it her. Then Oswald explained, and Alice agreed to come and watch if she could.
This made us later than we ought to have been, because Alice had to wait till Dora was quiet and then creep out very slowly, for fear of the boards creaking. The girls sleep with their room-door open for fear of burglars. Alice had kept on her clothes under her nightgown when Dora wasn't looking, and presently we got down, creeping past Father's study, and out at the glass door that leads on to the veranda and the iron steps into the garden. And we went down very quietly, and got into the chestnut-tree; and then I felt that we had only been playing what Albert's uncle calls our favourite instrument - I mean the Fool. For the house next door was as dark as dark. Then suddenly we heard a sound - it came from the gate at the end of the garden. All the gardens have gates; they lead into a kind of lane that runs behind them. It is a sort of back way, very convenient when you don't want to say exactly where you are going. We heard the gate at the end of the next garden click, and Dicky nudged Alice so that she would have fallen out of the tree if it had not been for Oswald's extraordinary presence of mind. Oswald squeezed Alice's arm tight, and we all looked; and the others were rather frightened because really we had not exactly expected anything to happen except perhaps a light.