This book is about a young boy named Roger. One night Bob and his wife, Joan, hear a knock at their door and Bob opens the door only to find a boy standing right there. Bob tells the young boy to come in the house, and when asked by Bob and Joan who he is, where he is from, etc, what he said was "I was a rat."I recently borrowed this book from the library and I loved it. The book isn't very long, only about 160 pages, but it is very good and a fun read. This is definitely one of my favorite books.