Our Betrayal (1) (S02E07)

An uncut diamond, representing the immense wealth of the British Empire, surfaces after being liberated from De Graal's diamond monopoly by Daniel Judge, Captain Jackson's dubious older sibling. Reid and Flight become involved in the struggle of a local artisan who has been cheated out of his livelihood by a con that threatens to plunge H Division back under the corrupt influence of Detective Inspector Jedediah Shine.