After a bad nightmare, Abe wakes up in a barn outside General Washington’s Camp at New Windsor. Anna tends to his wounds and helps him wrap up his father’s body in preparation for burial.
Caleb risks death to get a message to Ben at the camp: Simcoe was behind the ambush and he knows the identity of Culper. Caleb was unsure how much he told Simcoe during the torture in New York.
Even though Culper’s cover is blown, Ben and Abe concoct a plan that would help Washington get revenge on traitor/former BFF Benedict Arnold while Abe gets revenge on Simcoe.
But Washington’s obsession with Arnold is taking a toll on his men, some of whom decide to mutiny and march on Congress.The mutineers are caught and the leaders are killed by a firing squad -- made up of their own conspirators.
On the British side, Arnold has been appointed to head the newly-formed American Legion in order to go on special missions. Arnold doesn’t realize that the other British officers are setting him up.
Caleb takes Abe and his father home to Setauket where the judge is finally laid to rest. Mary implores her husband to get revenge on Simcoe.