In a war where right and wrong play second fiddle to subterfuge and treachery, youthful CIA agent Tom Wisher is quick to discover that true justice can only be brought about by stepping outside society and its laws.

Betrayed by his corrupt colleague, Bill Blake, while on a mission to rescue a US hostage in the Pakistan-Afghanistan border hills, Wisher finds himself on the run and implicated in the sale of nuclear weapons. Pursued relentlessly by the CIA, he decides to fake his own death with the help of a secret cell of assassins who offer him the opportunity to take revenge.

Embarking on a life in the shadows, Wisher’s covert pursuit takes him from the criminal underworlds of London and the Eastern bloc, to a brutal final confrontation in an abandoned Soviet ‘Secret City’, where both trained killers are determined that the demise of their opponent is the only possible outcome.

Featuring relentless pace and gritty realism inspired by movies such as The Bourne Trilogy, the series, in a world first, presents online viewers with the opportunity to engage directly with the show and choose which path Wisher should follow to complete his mission.

• Available in HD