It turns out that it was Eric who got Eva pregnant, and stole money from his father to help her.
The Inspector leaves. The family ring the infirmary and there is no record of a girl dying from drinking disinfectant.
Suddenly the phone rings, Mr Birling answers it, to his horror the phone call reveals that a young woman has just died from drinking disinfectant and the police are on their way to question them about it. The curtain falls and the play ends.