"Let's go on and see what the place is really like." They tip-toed round the building.

It was evidently unoccupied, though the delightful sense of uncertainty that at any moment some one might pounce out upon them or walk down the drive made the questionable adventure very charming.
"Have you ever been inside ?" asked Diggory.
"No, rather not; I don't think any one has except the doctor, and an old woman who comes in to do the house-work." "Well, then, I'm going in," answered Diggory, with a twinkle in his eye.
"Go on! Why, you might be had up for house-breaking!" "Rubbish! I'm not going to steal anything .-- Here, Mug, lend me your knife a minute." "I don't believe this one's fastened," he continued, walking up to one of the windows.

"No, it isn't.

Bother! I'm awfully sorry, Mugford." Using the big blade of the clasp-knife as a lever, Diggory had just succeeded in raising the sash the fraction of an inch, when the steel suddenly snapped off short at the handle.
"Oh, never mind," said the owner; "let's go back now.

What if we're seen!" "Oh, there's no fear of that," answered Jack, who was always infected with the adventurous spirit of his chum.--"Go on, Diggy; I'll come too." By inserting their fingers in the aperture, the boys soon raised the sash, and a few seconds later Diggory mounted the ledge and scrambled through the window "Come on," he said; "the coast's all clear." Jack Vance joined him immediately, and Mugford, not wishing to be left alone outside, was not long in making up his mind to follow his companions.
The room in which the three boys found themselves was evidently a library or study.