From vintage scholastic cover: A strange message in code! Messages in silver bullets and jacket buttons! Letters written in invisible ink. All across revolutionary America, spies for the patriots and the redcoats are stealing through enemy lines, getting vital information. Who are these spies? No one can be sure. Who would suspect the schoolmaster, or a fourteen-year-old boy, a Quaker housewife, a Yankee farmer, a Boston surgeon? Yet each one is risking his life on a secret mission that may change history. This book is based on John Blakely's book, "Turncoats, Traitors, and Heroes," published in 1959. Spelling and punctuation from the 18th century has been modernized in this book. Writers concentrated on the relatively unknown information and passed on info readily found in other books. For example, there's no mention of Benedict Arnold.