An accident in the kitchen forces Sheila to choose between loyalty to the cook or her own ambition, while Jack is stunned to discover the identity of a thief. Hetty reveals she doesn't trust Mrs Brody - but is this a mistake?

It's the day of the fair and Gideon makes a surprising discovery about Jack, while Hetty realises Mrs Brody is out to get her. Sheila and Constance battle to become the Festival Queen.

Hetty and Gideon search for proof of Jack's innocence, while Emily discovers Mr Buscombe has a secret - but is he telling the whole truth? Lady Grenford has a startling plan for Emily and Robert.