In the series finale, an American journalist is killed in Whitechapel and his story threatens explosive consequences for a number of Whitechapel residents.Long Susan (MyAnna Buring) has to deal with some shocking news and a face from her past while her business empire slips through her fingers.

Meanwhile, disturbing revelations are made as H Division gets closer to the train robbery truth.

The finale will air exclusively on Amazon Instant Video in the UK this Friday (Boxing Day)

Meanwhile, the murder of a chemist lifts the lid on a backstreet abortion racket concealing a nefarious scheme.

While the team of H Division investigates, Dr Frayn (Louise Brealey) sets out to modernise the practices at Obsidian Clinic, but faces conflict with both Long Susan and the authorities.