In a science fiction story, a character lands on what appears to be an uninhabited planet, but the reader knows that the people there live underground.
In a detective story, a character intentionally leaves misleading clues to his crimes to confuse the police.
Explanation:
a literary technique, originally used in Greek tragedy, by which the full significance of a character's words or actions are clear to the audience or reader although unknown to the character.
SInce the character left the clues intentionally it would be a clear action to the audience.
