Brian Kilmeade's book, "George Washington's Secret Six", is a worthwhile read, as well. As I'm watching "Turn", I keep thinking, "OK - who was #355?".
When I first started to watch the show I thought it was based on Brian Kilmeade’s book
I asked my wife that exact question....who is 355. My guess is that it is the astronomer guy, Hewett. I just do not know.