This is the moment when Jocasta knows the truth - her husband is her son. But Oedipus, unaware of what he'll reveal, is calling for the other shepherd to be brought in. Jocasta tries desperately to persuade him to call off the search. She fails, screams and rushes into the house. What does Oedipus think her problem is?

• She knows she's his mother
• She thinks she's married to a slave's son
• She's a woman, and can't face the truth