Hamlet is one of the most influential works of literature in the Western world. It's Shakespeare's longest piece and tells the tragic story of Prince Hamlet's revenge on his uncle Claudius and the fallout from his actions. The Danish prince is haunted by the ghost of his late father and it slowly drives him mad. Hamlet is also one of Shakespeare's most performed plays. Countless adaptations have been made since its publishing in an unknown time between 1599 and 1602. The play contains the famous "to be or not to be" soliloquy that most people read at some point during high school or college. Image source: http://thehundredbooks.com/Hamlet.htm