In the third-season premiere, Abe covers up a murder with an unlikely accomplice. Elsewhere, Benedict Arnold abuses his power as he settles into a new home in Philadelphia.

Anna tries to save the ring after Abe's cover is blown. Benedict Arnold seeks Washington's help against charges of treason. Townsend sends a signal.

Peggy gets Benedict Arnold to contact the British. Caleb plans an ambush for Simcoe. Anna tries to save Major Hewlett.

Ben is rescued by a mysterious woman. Abe tries to stop Anna from marrying Hewlett. Arnold begins negotiations with the British. Andre betrays Peggy.

Townsend uncovers a British counterfeiting operation. Rogers threatens to destroy Abe's spying ring. Simcoe threatens Richard.

Washington goes to Benedict Arnold's Philadelphia ball. Abe tries to stop Rogers from reaching Townsend. Old friends and enemies collide.

Mary attempts to kill Simcoe by herself. Benedict Arnold defends himself in his court-martial. Ben reunites with his savior.

The Culper Ring is resurrected in time to save Washington's army. Simcoe terrorizes Setauket as he hunts for Rogers. Anna infiltrates New York.

Benedict Arnold plots to give West Point to the British. Andre negotiates for Peggy. Abe plots a revolt in Setauket.

The captured spies on both sides of the war head to the gallows. Benedict Arnold demands glory revenge.