The Last Enemy

A reclusive mathematician returns to England to attend his brothers funeral, finding a world much changed from the one he left, and is pulled into a spiral of strange events.

Stephen and Yasim join forces with Russell after he saves them from an assassination attempt. They continue to unravel the mystery of why refugees like Nadir are dying from an unknown disease and why so many microbiologists are dying under mysterious circumstances. Conscious of the fact that they have been noticed they try to throw off those that have been watching them.

The final episode of the conspiracy drama hurtles Stephen, Yasim and Michael into hiding with the new underclass: non-ID carrying people. Things reach a head and Stephen is confronted with a truth that could shatter his world view.