This interesting book holds many details on slavery, and how slaves tried to escape without being caught by their owners. This book does not have a lot of graphic details, but the author tells how the slaves were beaten, why they were beaten, and how they were healed from the whipped wounds.In the middle of the book, John, a man with cuts and scars , is sent to the main character, Sarny's field. Late at night John, teaches Sarny letters and how to read.This book is an interesting story on slavery and how John, later called NightJohn, can run away teach his own school,and how Sarny and himself were able to escape.I highly recommend you to read this book.