Answer:
The mystery is about where Antigone spent the night.
Explanation:
In the first act, Antigone comes home at dawn, which makes everyone questioning where she spent the night and what she was doing, as this was not the appropriate time for maidens to go out, nor was it right for them to stay out of the house for so long. home without a companion. Everyone starts to think that Antigone went to meet a lover and although she does not deny this suspicion, she does not say what she was doing, which leaves her way out of the mystery.
Antigone actually went out to disobey the king's rule that no one should attend her brother's funeral, however, this is only revealed during the play.
