"The Last Enemy" is a British television series that aired in 2008. The show stars Benedict Cumberbatch as Stephen Ezard, a brilliant but reclusive mathematician who returns to London after the death of his parents. He becomes embroiled in a conspiracy involving a new technology that can track and control people through their DNA. The series explores themes of surveillance, privacy, and the implications of scientific advancements. As Stephen navigates a world filled with political intrigue and ethical dilemmas, he must confront the consequences of a society increasingly dominated by technology and the loss of personal freedom.