Course Hero. "King Lear Study Guide." Course Hero. 10 Aug. 2016. Web. 20 July 2018. <https://www.coursehero.com/lit/King-Lear/>.
Course Hero. (2016, August 10). King Lear Study Guide. In Course Hero. Retrieved July 20, 2018, from https://www.coursehero.com/lit/King-Lear/
(Course Hero, 2016)
Course Hero. "King Lear Study Guide." August 10, 2016. Accessed July 20, 2018. https://www.coursehero.com/lit/King-Lear/.
Course Hero, "King Lear Study Guide," August 10, 2016, accessed July 20, 2018, https://www.coursehero.com/lit/King-Lear/.
Back at Gloucester's castle, Edmund and Cornwall take the stage. Cornwall swears revenge on Gloucester, while Edmund is worried people will criticize him for siding with Cornwall instead of his own father. He gives Cornwall a letter documenting the fact that Gloucester has been sending information to France. Cornwall promises Edmund's reward for this will be to take his father's place as Earl of Gloucester.
Just as the previous scene shows the good characters clustering together, this scene shows the evil ones doing the same. By betraying his father to Cornwall, Edmund links his own fate to the Duke of Cornwall's. He's also growing increasingly treacherous; having displaced his brother, now he has betrayed his father.
This scene includes the critical letter. In this instance, the letter is not just a communication. The letter, which initially indicated Gloucester's continuing loyalty to Lear and Cordelia, has been appropriated by Cornwall as evidence of Gloucester's role as a spy for the French. Cornwell thus fosters this false interpretation, allowing Edmund appear to gain power over his father. However, Edmund is still operating in the shadow of the law, and he is still a villain.