MACBETH: The table’s full.
LENNOX: Here is a place reserved, sir.
…MACBETH: Which of you have done this?
LORDS: What, my good lord?

– William Shakespeare

Macbeth, Act 3, Scene 4. The themes of appearance vs reality, madness, and the supernatural are shown here. Macbeth is the only one at the gathering of Scottish nobility to see the ghost of Banquo at the banquet. He becomes so insanely paranoid that he imagines seeing the ghost of the friend he had murdered. The other lords are confused by Macbeth’s behavior.