The explanation provided discusses dramatic irony within a scene from Macbeth, where Macduff discovers King Duncan's murder.
What happened in the play
The audience and some characters possess knowledge about the murder, creating a contrast between what is known to them and what Macduff, unaware of the killer's identity, perceives.
Macbeth, Lady Macbeth, and the audience already possess information about the murder but feign ignorance to preserve the illusion of innocence.
Macbeth's pretense of horror is essential to deflect suspicion away from himself as the perpetrator of Duncan's murder. This dramatic irony heightens tension and engages the audience in the characters' conflicting perspectives and hidden truths.