Fort Warren was started in 1833 on Georges Island to protect the City of Boston. It was first occupied by Union Soldiers at the start of the Civil War. The government soon utilized the fort as a prison for Confederate military and political prisoners. It achieved its place in history because of many famous Confederate prisoners incarcerated within its walls. During WWI and WWII the fort, armed with huge artillery, became a mine control center for Boston Harbor. The book includes stories about the Trent Affair, the writing of the John Brown song, escapes, executions and the famous Legend of the Ghost of the Lady in Black. The print edition contains numerous photos-many published for the first time.