E. W. Hornung 
Some Persons Unknown [EPUB ebook] 

Excerpt: "Kenyon had been more unmanageable than usual. Unsettled and excitable from the moment he awoke and remembered who was coming in the evening, he had remained in an unsafe state all day. That evening found him with unbroken bones was a miracle to Ethel his sister, and to his great friend John, the under-gardener. Poor Ethel was in charge; and sole charge of Kenyon, who was eleven, was no light matter for a girl with her hair still down. Her brother was a handful at most times; to-day he would have filled some pairs of stronger hands than Ethel’s. They had begun the morning together, with snob-cricket, as the small boy called it; but Kenyon had been rather rude over it, and Ethel had retired. She soon regretted this step; it had made him reckless; he had spent the most dangerous day. Kenyon delighted in danger. He had a mania for walking round the entire premises on the garden wall, which was high enough to kill him if he fell, and for clambering over the greenhouses, which offered a still more fascinating risk. Not only had he done both this morning, he had gone so far as to straddle a gable of the house itself, shrieking good-tempered insults at Ethel, who appealed to him with tears and entreaties from the lawn below."