Inspector Reid and DS Drake investigate the death of Otto Roberts, a telegraph boy who is found strangled in a room at the Harlequin hotel to which he had been dispatched. It was just by chance that the lad had been sent as another telegraph boy, David Goodbody, hadn't shown up for work. They trace the telegram to the City but can't identify the sender. They do notice a rather large volume of telegrams from the City to addresses in Whitechapel. The boys were blackmailing one of their clients, Solomon Quint, but by the time the police reach him Quint has committed suicide. Jackson determines that it's murder however. The police soon uncover a homosexual ring being run with the messenger boys but that isn't the reason behind the murders. Jackson meanwhile decides to confront their landlord, Silas Duggan, after he again demands more money from Long Susan.
—garykmcd