One especially intriguing and wonderful aspect of John Rowe Townsend's books is that there is a clear story there whatever age you are. I first read this book when I was about 9, and it was a thrilling read about the naughtiness of a cooped-up little boy running around on the rooftops! Many years later it is one of the most terrifying things I have ever read. Sensible 10-year-old Kathy is left in charge of her 7-year-old brother Donald, who wants to go to "Heaven" which is not allowed. "Heaven" is the Barrett family's name for the lovely little garden on the roof of the 20-storey block of flats where Mr and Mrs Barrett work. Just when Donald sneaks out of the flat and up to Heaven also happens to be the time somebody has carelessly left the ladder to the rooftops down, and also just when the President of the company is coming to visit . . . Anyone who has ever known what it is to worry about the safety of a child, or indeed their job security and family's future, had better cover their nails with masking tape before reading Top of the World! A hugely gripping yet often affectionate novel, it is written with sympathy for all its often infuriating characters - bored, incorrigible young Donald and the bullying Superintendant, Mr Hurst, who wants things spick and span for the President - I would recommend this to anyone who likes reality as well as grandeur and mass destruction. Definitely buy!