Come Hell or High Water is the third book in the series that uses actual historical events in the American Civil War to give you a better understanding of what took place in the North and the South as the War continues. Colonel O'Neil as a Confederate Spy in Lincoln's White House has expanded his efforts to help the South win battles with detailed military information on the Union Army. After General Lee's Victory in the Battle of Chancellorsville, General Lee makes his second invasion of the North. However when General Lee is drawn into a battle he did not need fight at Gettysburg it ended his Northern invasion and became the high water mark for the Confederacy. When the Union Army allowed General Lee's Army to escape, President Lincoln tries to find a Union Commander who will fight and win the War. After General Lee's Victory in the Battle of Fredericksburg President Lincoln learns that the Union Army has committed barbaric atrocities against the Civilian Population and he establishes a Code of Conduct for the Union Army. O'Neil continues to use Stockton's money to buy Blockage Runners to bring in Military Goods the South desperately need to continue the War while he invests in Southern Banks to support the Confederate economy. O'Neil also helped Allen Pinkerton Who is the Union's Chief Investigator capture Lincoln's assassins.