Regan, Edmund, and members of their army gather in the British camp near Dover. Regan quizzes Edmund about his feelings for Goneril. Edmund promises Regan that he will not be intimate with her sister.
Goneril and Albany enter. Albany states that he intends to defend the kingdom against the French invaders. Goneril asserts that the fight is not a domestic quarrel, but a defense against an outside enemy.
Edgar, still disguised as Poor Tom, appears and hands Albany the letter he removed from Oswald's body, the letter Goneril wrote ordering Edmund to kill her husband. Edgar leaves, and Edmund enters with news that the opposing forces are near.
