Editing King Lear (section)

===Act IV===
Edgar, in his madman's disguise, meets his blinded father on the heath. Gloucester, sightless and failing to recognise Edgar's voice, begs him to lead him to a cliff at Dover so that he may jump to his death. Goneril discovers that she finds Edmund more attractive than her honest husband Albany, whom she regards as cowardly. Albany has developed a conscience—he is disgusted by the sisters' treatment of Lear and Gloucester—and denounces his wife. Goneril sends Edmund back to Regan. After receiving news of Cornwall's death, she fears her newly widowed sister may steal Edmund and sends him a letter through Oswald. Now alone with Lear, Kent leads him to the French army, which is commanded by Cordelia. But Lear is half-mad and terribly embarrassed by his earlier follies. At Regan's instigation, Albany joins his forces with hers against the French. Goneril's suspicions about Regan's motives are confirmed and returned, as Regan rightly guesses the meaning of her letter and declares to Oswald that she is a more appropriate match for Edmund. Edgar pretends to lead Gloucester to a cliff, then changes his voice and tells Gloucester he has miraculously survived a great fall. Lear appears, by now, completely mad. He rants that the whole world is corrupt and runs off.

Oswald appears, still looking for Edmund. On Regan's orders, he tries to kill Gloucester but is killed by Edgar. In Oswald's pocket, Edgar finds Goneril's letter, in which she encourages Edmund to kill her husband and take her as his wife. Kent and Cordelia take charge of Lear, whose madness quickly passes.