Type and shadow

I was reading a book called Latter Day Spies and, it is a type and shadow of the Nephites escaping the drunk slaves of the king because, the three friends were trapped inside the castle and the bad guys were going to go get beer.  One of the servants forgot to lock Sadie's door.When the bad guys got back they got drunk and they escaped.It is a really good book.  I also finished Black Beauty.