“Well, we’ll have to be out of our rooms whilst Dimmy is cleaning them each day,” said Peggy. “But as soon as the cleaning is done we could take it in turns to go into the top bedroom and watch, without Dimmy knowing. We could have fairly long watches - say three hours. We needn’t keep our eyes on the tower all the time - we could read or something and keep looking up. I shall do my knitting.”
“And I shall do my jigsaw,” said Mike. “I can do that and keep looking up easily.”
“We’ll begin to-morrow morning,” said Jack. “I hope Dimmy doesn’t go up to our bedroom and find one of us there - she’ll think we’ve quarrelled or something!”
They took a look at the tower in the distance as they went to bed that night. But there was nothing to be seen. Nobody looked out. A dim light shone, that was all.
“There must be somebody there now,” said Jack. “Or they wouldn’t have a light. Goodness, I’m sure I shall never go to sleep to-night! My mind keeps thinking of secret caves!”
They did lie awake rather a long time, but at last they were all asleep and dreaming. They dreamt of caves and passages and towers and prisoners, and had just as exciting a time in their sleep as they had had in the daytime.
Mike looked at the distant tower as soon as he jumped out of bed next morning, but there was no one there. Jack took a glance as he was about to go downstairs - and he gave a cry.
“There’s someone at the window!”
Mike came rushing to see - but Jack pushed him back. “Don’t go too near our window. If we can see them they can see us - and it looks to me as if it’s only Mr. Diaz.”
The two boys kept back a little so that no one could see them. Yes - it was Mr. Diaz - and he was looking straight at their window.