Dramatic irony is inherent in speeches that is understood by the audience but not perceived by characters in the play. It is an important stylistic device used as a plot device where the audience knows about situations, causes of conflict and their resolutions or their intentions before characters. The speeches and actions would have a different understanding to the audience from what they indicate to the characters. An example of dramatic irony is in Act 1 Scene 6. ‘This castle hath a pleasant seat; the air’. In this Scene, Duncan comments on how pleasant and welcoming Macbeth’s castle is. This is ironic because audience knows the Macbeths are plotting to kill him. This creates excitement over the uncertainty of whether Duncan is going to be murdered and when it will take place. Throughout the play of Macbeth, Shakespeare uses dramatic irony to create intense suspense and humour. This emphasises emotions and moods more effectively.