This document provides an introduction to William Shakespeare and his play King Lear. It gives biographical details about Shakespeare and lists some of the main characters in King Lear, including Lear, Regan, Cordelia, Gloucester and Edmund. It then discusses major themes in the play such as betrayal, loyalty, power, blindness and insight, and madness and sanity. It concludes by summarizing that King Lear is a tragic play about power, familial relationships, madness and betrayal, ending with the deaths of many characters including Lear and Cordelia in a sense of profound loss.