Stephen Ezard (Benedict Cumberbatch) returns to London to mourn the loss of his brother, Michael, and enters a society now obsessed with surveillance. Searching to make sense of Michael's death, Stephen uncovers secrets about his brother's life -- including a wife he never knew Michael had. Taking a government job to trace leads through a powerful new database, Stephen exposes troubling revelations and soon finds himself stalked by a rogue agent (Robert Carlyle). But when Stephen stumbles into an international conspiracy, he realizes that the omnipresent and menacing eye of the government has turned on him. Scripted by Peter Berry (Prime Suspect 6), The Last Enemy offers a frenetic ride through the paranoia and politics of a futuristic surveillance society. The Last Enemy aired on PBS's Masterpiece Theatre Contemporary from October-November 2008.